# Description

ULTIMATE OHMS LAW

We offer you easily the best and most comprehensive Ohm's Law app available ABSOLUTELY FREE!

Written by a developer with a B.Sc. degree in Electronics.

Check out the screen shots. Ultimate Ohm's law is not simply a calculator - it has all these indispensable features:

1. A step by step tutorial, in easy to understand language, we give you the lowdown on how Ohm's Law Works.

2. A module of questions so you can put your knowledge to the test.

3. A set of three easy to use calculators to enable you to work out the current, resistance or voltage in a circuit.

There are over 30 seperate screens in this app! All for free!

Perfect for anyone studying electronics or a hobbyist/engineer.

The app works on Android v2.3.3 up, and from small screens (QVGA) right up to the latest big screen smartphones. I use it on my HTC Tattoo (which has a QVGA screen) no problems at all.

This year we aim to publish many more electronics related apps so don't forget to keep checking back.

If you have any questions contact us on info@ringoo.co.uk. We'd love to hear from you!

Thanks for looking!

You must install this app before submitting a review.

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My review

Review from

# Reviews

Helpfulness

Newest

Rating

Helpfulness

All Versions

All Versions

Latest Version

4.4

37 total

5 22

4 9

3 4

2 2

1 0

JJ LA

Battery hog I accidentally opened this earlier today but immediately closed it and made sure it wasn't active in system panel. It used up 2% battery. I had my music player running for 31 min and that used 2%. I played Flappy Bird for awhile and that only took 2%. Yet, this app was open for only one second. How could it consume 2%? WTH?

Paul X

Excellent easy to understand I have not used all of the app yet but the general instruction is very informative and helpful. thank you very much developer.

Asan Khan

very good please add some things as transistor capacitor diode relay etc excellent easy and usefull specially thanks 4 you thanks again bcoz its free and also ads free wow for your help full works for all

A Google User

Lee Very good

User reviews

Review deleted

# What's New

Several bug fixes and ad support (sorry folks but we have to eat, just like you do).

# Additional information

Updated

June 19, 2012

Size

516k

Installs

5,000 - 10,000

Current Version

1.1

Requires Android

2.2 and up

Content Rating

Everyone

Permissions

Report

Flag as inappropriate Offered By

Ringoo Software

Developer

# Similar

## Ohm's Law Calculator

Amphan

1

Ohm's Law Calculator for Electronics/Electrical Tools.

And For Electrical Engineering Education.

Features

Ohm's Law Calculator. (Power ( W. ),Voltage ( V.), Current ( A.), Resistance ( Ω.)

12 Ohm's Law formula ( P = EI ,E = IR ,I = E/R, R = E/I and other)

Show Calculate Result on Graphics Display UI and Text.

Free Version with Ad.

Full Android Source Code. It cost 25 USD.

Please contact amphancm@gmail.com

My Web Blogs : Android Control External Hardware.

http://androidcontrol.blogspot.com/

6 Feb 2014

And For Electrical Engineering Education.

Features

Ohm's Law Calculator. (Power ( W. ),Voltage ( V.), Current ( A.), Resistance ( Ω.)

12 Ohm's Law formula ( P = EI ,E = IR ,I = E/R, R = E/I and other)

Show Calculate Result on Graphics Display UI and Text.

Free Version with Ad.

Full Android Source Code. It cost 25 USD.

Please contact amphancm@gmail.com

My Web Blogs : Android Control External Hardware.

http://androidcontrol.blogspot.com/

6 Feb 2014

## Electronics Helper

This application i.e."Electronics Helper" is basically developed for the electronics students and associated people of this field to help them in understanding the basics and simplifying the various complex calculations which are more often than not associated with it.

The purpose of developing this app is to provide ease to the users while doing tedious and complex calculations of electronics. Almost all electronics calculations can be performed by it(for instance,this app includes basic "ohm's law calculator" to "resistor and capacitor series/parallel calculator", "555 timer generator calculator" to "electricity and energy consumption calculator",and many more). Overall 14 sub apps are inside it. Moreover it has more than 35 calculators inside a single sub app i.e. "electrical calculator" (which is one out of the 14 sub app of this main app).

It also includes "resistor color code calculator app" along with almost all transistors and diodes series specifications.

By and large, it has included all the electronics calculator apps inside a single app which will certainly help the users in solving their related problems.

The purpose of developing this app is to provide ease to the users while doing tedious and complex calculations of electronics. Almost all electronics calculations can be performed by it(for instance,this app includes basic "ohm's law calculator" to "resistor and capacitor series/parallel calculator", "555 timer generator calculator" to "electricity and energy consumption calculator",and many more). Overall 14 sub apps are inside it. Moreover it has more than 35 calculators inside a single sub app i.e. "electrical calculator" (which is one out of the 14 sub app of this main app).

It also includes "resistor color code calculator app" along with almost all transistors and diodes series specifications.

By and large, it has included all the electronics calculator apps inside a single app which will certainly help the users in solving their related problems.

## ElectroBuddy

ElectroBuddy- The biggest collection of most widely used electronics tools under one roof for all electronics students, enthusiasts and industry professionals. The best part of this app is- its windows look-alike user interface for its user making it too friendly to love it.

The goal of this app is to provide you with an easy and smart way to learn all you want about electronics engineering,; whether you are a student, hobbyist, or just curious about electronics, this app will provide you with the all information you need helping you to achieve your objectives.

It has three main categories namely Calculators, Pinouts and Tables.

Calculators:

Free version has best 30 calculators in a row to ease out your calculation part along with all necessary formulae/circuits for your reference.

1) Resistor Color Code (4 band, 5 band, 6 band with color code to value and value to color code feature)

2) Ohm’s Law

3) LED Series Resistor (LED type, Supply voltage and forward current)

4) Charge/Energy

5) Capacitor Code (code to value and value to code)

6) Power (AC and DC)

7) Inductor Color Code (color code to value and value to color code feature)

8) Power Dissipation

9) Inductor Series/Parallel (addition become with this tool)

10) Capacitor Series/Parallel (addition become with this tool)

11) 555 Timer (Monostable and Bistable Mode)

12) Capacitor Units

13) Resistor Series/Parallel (addition become with this tool)

14) Reactance calculator (Inductive, capacitive and resonance)

15) Voltage Divider

16) Logic Gates (covered all Boolean logic Gates along with easy tip to remember)

17) Resistor Ratio (with invert operation feature)

18) Wheatstone Bridge

19) Battery Life( with complete life span in day, hours, min)

20) Frequency (customization available with some standard wavelengths offered)

21) ADC (Resolution, Quantization, ADC value and SQNR)

22) Op-Amp (Differential, inverting and non inverting amplifiers)

23) Start-Delta Transformation

24) Peak-RMS(Peak, RMS, Peak-Peak)

25) Resistor SMD Code

26) PCB Trace Width

27) Inductor Design Tool

28) Adjustable Voltage Regulator

29) Decibel

30) Filter

The goal of this app is to provide you with an easy and smart way to learn all you want about electronics engineering,; whether you are a student, hobbyist, or just curious about electronics, this app will provide you with the all information you need helping you to achieve your objectives.

It has three main categories namely Calculators, Pinouts and Tables.

Calculators:

Free version has best 30 calculators in a row to ease out your calculation part along with all necessary formulae/circuits for your reference.

1) Resistor Color Code (4 band, 5 band, 6 band with color code to value and value to color code feature)

2) Ohm’s Law

3) LED Series Resistor (LED type, Supply voltage and forward current)

4) Charge/Energy

5) Capacitor Code (code to value and value to code)

6) Power (AC and DC)

7) Inductor Color Code (color code to value and value to color code feature)

8) Power Dissipation

9) Inductor Series/Parallel (addition become with this tool)

10) Capacitor Series/Parallel (addition become with this tool)

11) 555 Timer (Monostable and Bistable Mode)

12) Capacitor Units

13) Resistor Series/Parallel (addition become with this tool)

14) Reactance calculator (Inductive, capacitive and resonance)

15) Voltage Divider

16) Logic Gates (covered all Boolean logic Gates along with easy tip to remember)

17) Resistor Ratio (with invert operation feature)

18) Wheatstone Bridge

19) Battery Life( with complete life span in day, hours, min)

20) Frequency (customization available with some standard wavelengths offered)

21) ADC (Resolution, Quantization, ADC value and SQNR)

22) Op-Amp (Differential, inverting and non inverting amplifiers)

23) Start-Delta Transformation

24) Peak-RMS(Peak, RMS, Peak-Peak)

25) Resistor SMD Code

26) PCB Trace Width

27) Inductor Design Tool

28) Adjustable Voltage Regulator

29) Decibel

30) Filter

PINOUTS:

Free version has best 39 PINOUTS Diagram in a row to ease out your pinning need.

Electronic Components:

1) MOSFET

2) Diode (1N4001)

3) LED

4) Diode (1N4007)

5) Capacitor

6) Diode (1N4148)

7) NPN Transistor (2N2222)

8) Piezo Buzzer

9) Transistor (BC 548)

10) RF Module (433MHz)

11) BC 547

12) Trim POT

13) Relay

14) IR LED

15) Transformer

Display Devices:

1) 16x2 LCD

2) Seven Segment Display

3) Graphical LCD

Connectors:

1) Serial Port

2) VGA

3) Parallel Port

4) RCA

5) SCART

6) EIDE/ATA-SATA

7) HDMI

8) XLR and DMX

9) Display Port

10) PS/2-AT

11) S-Video

12) USB (2.0 Standard, Mini, Micro, USB 3.X)

13) DVI(with mini)

14) Car Audio ISO

15) Ethernet Port

16) PDMI

17) FireWire

18) DC Power(Male and Female)

19) MIDI

20) Arduino UNO Board(complete pinout with overview, layout, header and features)

21) Registered Jack(RJ 48C, RJ 48X, RJ 61)

Tables

1) Who am I? ( Identify the description, type and packaging of you’re the entered electronic components)

2) AWG/SWG Wire Size

3) Electronic Terms (Search Alphabetically)

4) 7400 Series

5) LED

6) Logic Gates (with Boolean Theorems)

7) Ohm’s Law

8) POT Code

9) Relay Type

10) Circuit Symbols (with categories)

11) LED Resistor

12) Resistivity

13) SI Units

14) RF Spectrum

15) Standard Capacitors

16) Voltage Regulator (78XX Series and LM Series)

17) Standard Resistor

18) Abbreviations (Latest what you can look for)

19) Frequency

20) Power/Energy

21) Transistor

## EveryCircuit Free

MuseMaze

1

All joking aside, this time you will understand how electronic circuits work.

"I stumbled upon some serious gold" - GeekBeat.tv

"This app takes design to a whole new level of interactivity" - Design News

Build any circuit, tap play button, and watch dynamic voltage, current, and charge animations. This gives you insight into circuit operation like no equation does. While simulation is running, adjust circuit parameters with analog knob, and the circuit responds to your actions in real time. You can even generate an arbitrary input signal with your finger!

That's interactivity and innovation you can't find in best SPICE tools for PC like Multisim, LTspice, OrCad or PSpice (trademarks belong to their respective owners).

EveryCircuit is not just an eye candy. Under the hood it packs custom-built simulation engine optimized for interactive mobile use, serious numerical methods, and realistic device models. In short, Ohm's law, Kirchhoff's current and voltage laws, nonlinear semiconductor device equations, and all the good stuff is there.

Growing library of components gives you freedom to design any analog or digital circuit from a simple voltage divider to transistor-level masterpiece.

Schematic editor features automatic wire routing, and minimalistic user interface. No nonsense, less tapping, more productivity.

Simplicity, innovation, and power, combined with mobility, make EveryCircuit a must-have companion for high school science and physics students, electrical engineering college students, breadboard and printed circuit board (PCB) enthusiasts, and ham radio hobbyists.

Create an account to unlock the full functionality for a limited time. The full version will employ all of your imagination, and all the screen area of your tablet. Join EveryCircuit cloud community to store your circuits on cloud, access them from any of your devices, explore public community circuits and share your own designs. The app requires a permission to access your account for authentication in EveryCircuit community.

Thanks to Prof. N. Maghari for technical discussions, feedback, and help with designing circuit examples.

Features:

+ Growing public library of community circuits

+ Animations of voltage waveforms and current flows

+ Animations of capacitor charges

+ Analog control knob adjusts circuit parameters

+ Automatic wire routing

+ Oscilloscope

+ Seamless DC and transient simulation

+ Single play/pause button controls simulation

+ Saving and loading of circuit schematic

+ Mobile simulation engine built from ground-up

+ Shake the phone to kick-start oscillators

+ Intuitive user interface

+ No Ads

Components:

+ Sources, signal generators

+ Controlled sources, VCVS, VCCS, CCVS, CCCS

+ Resistors, capacitors, inductors, transformers

+ Voltmeter, amperemeter, ohmmeter

+ Potentiometer, lamp

+ Switches, SPST, SPDT

+ Push buttons, NO, NC

+ Diodes, Zener diodes, light emitting diodes (LED)

+ MOS transistors (MOSFET)

+ Bipolar junction transistors (BJT)

+ Ideal operational amplifier (opamp)

+ Digital logic gates, AND, OR, NOT, NAND, NOR, XOR, XNOR

+ Relay

+ 555 timer

+ Counter

+ 7-segment display and decoder

Next:

+ More components

If you like it, please rate, review, and buy!

## Fun With Resistors

A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. A resistor is perhaps the most common building block used in circuits. This tool is used to decode information for color banded axial lead resistors. Select the number of bands, then their colors to determine the value and tolerance of the resistors.

## EveryCircuit

MuseMaze

1

All joking aside, this time you will understand how electronic circuits work.

"I stumbled upon some serious gold" - GeekBeat.tv

"This app takes design to a whole new level of interactivity" - Design News

Build any circuit, tap play button, and watch dynamic voltage, current, and charge animations. This gives you insight into circuit operation like no equation does. While simulation is running, adjust circuit parameters with analog knob, and the circuit responds to your actions in real time. You can even generate an arbitrary input signal with your finger!

That's interactivity and innovation you can't find in best SPICE tools for PC like Multisim, LTspice, OrCad or PSpice (trademarks belong to their respective owners).

EveryCircuit is not just an eye candy. Under the hood it packs custom-built simulation engine optimized for interactive mobile use, serious numerical methods, and realistic device models. In short, Ohm's law, Kirchhoff's current and voltage laws, nonlinear semiconductor device equations, and all the good stuff is there.

Growing library of components gives you freedom to design any analog or digital circuit from a simple voltage divider to transistor-level masterpiece.

Schematic editor features automatic wire routing, and minimalistic user interface. No nonsense, less tapping, more productivity.

Simplicity, innovation, and power, combined with mobility, make EveryCircuit a must-have companion for high school science and physics students, electrical engineering college students, breadboard and printed circuit board (PCB) enthusiasts, and ham radio hobbyists.

Join EveryCircuit cloud community to store your circuits on cloud and access them from any of your Android devices. Explore public community circuits and share your own designs. The app requires a permission to access your account for authentication in EveryCircuit community.

Thanks to Prof. N. Maghari for technical discussions, feedback, and help with designing circuit examples.

Features:

+ Thousands of public community circuits

+ Animations of voltage waveforms and current flows

+ Animations of capacitor charges

+ Analog control knob adjusts circuit parameters

+ Automatic wire routing

+ Oscilloscope

+ Seamless DC and transient simulation

+ Single play/pause button controls simulation

+ Saving and loading of circuit schematic

+ Mobile simulation engine built from ground-up

+ Shake the phone to kick-start oscillators

+ Intuitive user interface

+ No Ads

Components:

+ Sources, signal generators

+ Controlled sources, VCVS, VCCS, CCVS, CCCS

+ Resistors, capacitors, inductors, transformers

+ Voltmeter, amperemeter, ohmmeter

+ Potentiometer, lamp

+ Switches, SPST, SPDT

+ Push buttons, NO, NC

+ Diodes, Zener diodes, light emitting diodes (LED)

+ MOS transistors (MOSFET)

+ Bipolar junction transistors (BJT)

+ Ideal operational amplifier (opamp)

+ Digital logic gates, AND, OR, NOT, NAND, NOR, XOR, XNOR

+ Relay

+ 555 timer

+ Counter

+ 7-segment display and decoder

Next:

+ More components

If you like it, please rate, review, and buy!

## 3D Printers

Flowthis

1

This App provides information on nine of the most popular consumer 3D printers and DIY Kits.

Compare the most common models on price, performance, dimensions, nozzle size and much more

The app is constantly changing as information on price and shipping dates change as well

The printers compared in this app are ranging in price between 199$ and 3299$

Compare the most common models on price, performance, dimensions, nozzle size and much more

The app is constantly changing as information on price and shipping dates change as well

The printers compared in this app are ranging in price between 199$ and 3299$

The models include

One Up (199$), Robo 3D (599$), Ultimaker (1633$), Form 1 (3299$), Replicator (2199$),

Creatr (1669$), Cube (1569$), Ultimaker 2 (2593$), Prusa i3 (1143$)

## Ohm's Law

Two common calculators for electronics/electrical use:

Ohm's law calculator/Watt's Law calculator: figures any 2 unknown values given 2 known values

Resistor calculators: figures bands given value or value given bands. For 3, 4, & 5 band resistors

* Preferences/lock functions allow values to either autorange to appropriate SI units or remain fixed

* Resistor calculator automatically determines 3, 4, or 5 band

* Clean, intuitive interface

*** To the few who have commented that it's "stupid" to have the "Rate" button where it is, please stop && think. You don't HAVE to rate it before using it, nor are you even being asked to. You will notice that there are 2 buttons. This is the "About" dialog that is shown the first time you run any new version or tap the "About" menu item. Please think before you speak. Thank you. ***

Paid app "Electrist" identifies EIA standard values, as well as adds many more calculations. See for yourself:

https://market.android.com/details?id=com.redbinary.electrist

## ControlCalc

Application for Automatic control to simulate feedback systems, open loop and closed loop.

For version 1.0:

- Calculation of the transfer function

- Step response unit (temporal analysis)

- Black diagram (frequency analysis)

- Poles of the system

- Calculation of phase and gain margins

- Ability to save the graphical output

on the SD card in PNG format.

## Ohms Law Calculator

This calculator solves Ohms Law while helping you to learn the equations.

Just type values into two of the three fields (Voltage, Current, Resistance) and the third will be solved for you.

The equation used to solve for your variable is displayed so you'll always get prompted with the correct equation. Never forget Ohms Law again after using this app a few times it will be lodged firmly in your brain.

Just type values into two of the three fields (Voltage, Current, Resistance) and the third will be solved for you.

The equation used to solve for your variable is displayed so you'll always get prompted with the correct equation. Never forget Ohms Law again after using this app a few times it will be lodged firmly in your brain.

Not a single ad to be found in this app and it's completely free.

Enjoy, and if you like it please rate!

## Logic Simulator Pro

KAJORY

1

Build circuits with logic gates and several other components to simulate their functions.

With its simple and easy to use interface it doesn't take long to learn how to use it, great for students who's learning how logic circuit works.

With its simple and easy to use interface it doesn't take long to learn how to use it, great for students who's learning how logic circuit works.

Logic Simulator Pro contains multiple useful features such as:

- Logic gates (AND,OR,NAND,NOT,NOR,XOR,XNOR)

- Buttons, Displays, Lamps, Clocks,

- Recovery feature (If the app closes before you manage to save your circuit due to a phone call or by accident, Logic Simulator Pro will automatically save a copy of your current progress. This copy can be easily accessed through the open circuit interface)

If you have any suggestions on improvements or bug reports please email me on the adress provided below:

Kajory1@gmail.com

# More from developer

## Ultimate Kirchhoff

This app is absolutely free with ad support. Written by a developer with a degree in Electronics.

Check out the screenshots:

1. A step by step tutorial, in easy to understand language. We give you the lowdown on how Kirchhoff's rules Work, and how you can apply them to your circuits.

2. A module of questions so you can put your knowledge to the test.

3. A large selection of great Kirchhoff resources on the web - just a tap away!

This completely free app works on most versions of Android, and from small screens (QVGA) right up to the latest big screen smartphones. I use it on my HTC Tattoo (which has a QVGA screen) no problems at all.

This year we aim to publish many more electronics related apps this year so don't forget to keep checking back.

If you have any questions contact us on info@ringoo.co.uk. We'd love to hear from you!

Thanks for looking!

## EZ VAT 2in1 for Android.

VAT's the way to do it! Most percentage calculators on the market try to show you how clever they are by cramming in loads of functions. The result - some of them are more complex than a scientific calculator!

With our EZ Toolz series, we turn this philosophy on it's head and make our calculators as simple to use as we possibly can. This is without doubt the easiest to use VAT calculator on the market. And it's FREE!

FUNCTIONS:

EZ VAT 2in1 first function is working out the 20% VAT on an amount, showing you both the VAT amount and the result.

EZ VAT second function is to take an amount that already has VAT included, and to break it down into it's two components. Take a look at the screen shots for more details.

Just because this app is simple to use doesn't mean it is basic in quality. You get nice big buttons that vibrate when you touch them, and a large easy to read display.

Check out our range of FREE EZ Toolz Percentage Calculators:

EZ Percent #1, which solves the problem "What is X percent of Y?" For example "What is 20 percent of 150?".

EZ Percent #2, which solves the problem "What is X plus Y percent?" (example: what is 60 plus 20 percent?).

EZ Percent #3, which solves the problem "What is X minus Y percent?" (example: what is 1024 minus 32 percent).

EZ Percent #4, which solves the problem "What is X as a percentage of Y?" (example: what is 50 as a percentage of 200?).

EZ Percent #5, which solves the problem "What number is X a Y percentage of? (example: 12 is 75% of what number?).

EZ Percent #6, which solves the problem "What percent greater than X is Y?" (example: What percent greater than 75 is 100?).

EZ Percent #7, which solves the problem "What percent less than X is Y?" (example: What percent less than 100 is 75?).

EZ Percent #7in1 includes our entire range of EZ Tools percentage calculators, all for less than the price of a small beer.

Check out the screen shots and you'll notice the language the calculator uses: the same language you use. Not a mathematical symbol in sight.

We have worked hard to made these apps completely foolproof. For example if a button is not needed at a particular time it is disabled so you cannot press it by accident.

These apps are so easy to use, we guarantee your stress levels will drop and your productivity will rise just as quickly!

As always, we welcome your feedback. If you have any questions or suggestions, please let us know at info@ringoo.co.uk.

## EZ Percent #7in1 for Android.

Most percentage calculators on the market try to show you how clever they are by cramming in loads of functions. The result - some of them are more complex than a scientific calculator! With our EZ Toolz series, we turn this philosophy on it's head and make our calculators as simple to use as we possibly can.

EZ Percent #7in1 includes our entire range of EZ Tools percentage calculators, all for less than the price of a small beer:

EZ Percent #1, which solves the problem "What is X percent of Y?" For example "What is 20 percent of 150?".

EZ Percent #2, which solves the problem "What is X plus Y percent?" (example: what is 60 plus 20 percent?).

EZ Percent #3, which solves the problem "What is X minus Y percent?" (example: what is 1024 minus 32 percent).

EZ Percent #4, which solves the problem "What is X as a percentage of Y?" (example: what is 50 as a percentage of 200?).

EZ Percent #5, which solves the problem "What number is X a Y percentage of? (example: 12 is 75% of what number?).

EZ Percent #6, which solves the problem "What percent greater than X is Y?" (example: What percent greater than 75 is 100?).

EZ Percent #7, which solves the problem "What percent less than X is Y?" (example: What percent less than 100 is 75?).

Check out the screen shots and you'll notice the language the calculator uses: the same language you use. Not a mathematical symbol in sight.

Just because the app is simple to use doesn't mean it is basic in quality. You get nice big buttons that vibrate when you touch them, and a nice clear easy to read display.

We have worked hard to made these apps completely foolproof. For example if a button is not needed at a particular time it is disabled so you cannot press it by accident.

These apps are so easy to use, we guarantee your stress levels will drop and your productivity will rise just as quickly!

As always, we welcome your feedback. If you have any questions or suggestions, please let us know at info@ringoo.co.uk.

## EZ Percent #7 for Android.

Part of our EZ Toolz series, this app is much easier to use than a calculator! And it's free!

Most percentage calculators on the market try to show you how clever they are by cramming in loads of functions. The result - some of them are more complex than a scientific calculator! With our EZ Toolz series, we turn this philosophy on it's head and make our calculators as simple to use as we possibly can.

EZ Percent #7 solves the problem "What percent less than X is Y?" (example: What percent less than 100 is 75?)

That's the language the calculator uses, the same language you use. Not a mathematical symbol in sight. Have a look at the screenshots and you'll see what we mean.

Just because the app is simple to use doesn't mean it is basic in quality. You get nice big buttons that vibrate when you touch them, and a nice clear easy to read display.

We have made this app completely foolproof. For example if a button is not needed at a particular time it is disabled so you cannot press it by accident.

Check out our other EZ Toolz Percentage apps:

EZ Percent #1, which solves the problem "What is X percent of Y?" For example "What is 20 percent of 150?".

EZ Percent #2, which solves the problem "What is X plus Y percent?" (example: what is 60 plus 20 percent?).

EZ Percent #3, which solves the problem "What is X minus Y percent?" (example: what is 1024 minus 32 percent).

EZ Percent #4, which solves the problem "What is X as a percentage of Y?" (example: what is 50 as a percentage of 200?).

EZ Percent #5, which solves the problem "What number is X a Y percentage of? (example: 12 is 75% of what number?).

EZ Percent #6, which solves the problem "What percent greater than X is Y?" (example: What percent greater than 75 is 100?)

EZ Percent VAT, an extremely easy to use VAT calculator, which adds the current British VAT rate to an amount, or subtracts VAT.

EZ Percent 7in1, which gives you all the above calculators in one app, with NO ADS, all for less than the price of a beer!

These apps are so easy to use, we guarantee your stress levels will drop and your productivity will rise just as quickly!

As always, we welcome your feedback. If you have any questions or suggestions, please let us know at info@ringoo.co.uk.

## EZ Percent #6 for Android.

Part of our EZ Toolz series, this app is much easier to use than a calculator! And it's free!EZ Percent #1, which solves the problem "What is X percent of Y?" For example "What is 20 percent of 150?".

EZ Percent #2, which solves the problem "What is X plus Y percent?" (example: what is 60 plus 20 percent?).

EZ Percent #3, which solves the problem "What is X minus Y percent?" (example: what is 1024 minus 32 percent).

EZ Percent #4, which solves the problem "What is X as a percentage of Y?" (example: what is 50 as a percentage of 200?).

EZ Percent #5, which solves the problem "What number is X a Y percentage of? (example: 12 is 75% of what number?).

These apps are so easy to use, we guarantee your stress levels will drop and your productivity will rise just as quickly!

As always, we welcome your feedback. If you have any questions or suggestions, please let us know at info@ringoo.co.uk.

Most percentage calculators on the market try to show you how clever they are by cramming in loads of functions. The result - some of them are more complex than a scientific calculator! With our EZ Toolz series, we turn this philosophy on it's head and make our calculators as simple to use as we possibly can.

EZ Percent #6 solves the problem "What percent greater than X is Y?" (example: What percent greater than 75 is 100?)

That's the language the calculator uses, the same language you use. Not a mathematical symbol in sight. Have a look at the screenshots and you'll see what we mean.

Just because the app is simple to use doesn't mean it is basic in quality. You get nice big buttons that vibrate when you touch them, and a nice clear easy to read display.

We have made this app completely foolproof. For example if a button is not needed at a particular time it is disabled so you cannot press it by accident.

Check out our other EZ Toolz Percentage apps:

EZ Percent VAT, an extremely easy to use VAT calculator, which adds the current British VAT rate to an amount, or subtracts VAT.

EZ Percent 7in1, which gives you all the above calculators in one app, with NO ADS, all for less than the price of a beer!

## EZ Percent #5 for Android.

Part of our EZ Toolz series, this app is much easier to use than a calculator! And it's free!Just because the app is simple to use doesn't mean it is basic in quality. You get nice big buttons that vibrate when you touch them, and a nice clear easy to read display.

EZ Percent #1, which solves the problem "What is X percent of Y?" For example "What is 20 percent of 150?".

EZ Percent #2, which solves the problem "What is X plus Y percent?" (example: what is 60 plus 20 percent?).

EZ Percent #3, which solves the problem "What is X minus Y percent?" (example: what is 1024 minus 32 percent).

EZ Percent #4, which solves the problem "What is X as a percentage of Y?" (example: what is 50 as a percentage of 200?).

These apps are so easy to use, we guarantee your stress levels will drop and your productivity will rise just as quickly!

As always, we welcome your feedback. If you have any questions or suggestions, please let us know at info@ringoo.co.uk.

Most percentage calculators on the market try to show you how clever they are by cramming in loads of functions. The result - some of them are more complex than a scientific calculator! With our EZ Toolz series, we turn this philosophy on it's head and make our calculators as simple to use as we possibly can.

EZ Percent #5 solves the problem "What number is X a Y percentage of? (example: 12 is 75% of what number?). That's the language the calculator uses, the same language you use. Not a mathematical symbol in sight. Have a look at the screenshots and you'll see what we mean.

We have made this app completely foolproof. For example if a button is not needed at a particular time it is disabled so you cannot press it by accident.

Check out our other EZ Toolz Percentage apps:

EZ Percent #6, which solves the problem "What percent greater than X is Y?" (example: What percent greater than 75 is 100?).

EZ Percent VAT, an extremely easy to use VAT calculator, which adds the current British VAT rate to an amount, or subtracts VAT.

EZ Percent All7, which gives you all the above calculators in one app, with NO ADS, all for less than the price of a beer!

## EZ Percent #4 for Android.

Part of our EZ Toolz series, this app is much easier to use than a calculator! And it's free!Most percentage calculators on the market try to show you how clever they are by cramming in loads of functions. The result - some of them are more complex than a scientific calculator! With our EZ Toolz series, we turn this philosophy on it's head and make our calculators as simple to use as we possibly can.

Just because the app is simple to use doesn't mean it is basic in quality. You get nice big buttons that vibrate when you touch them, and a nice clear easy to read display.

We have made this app completely foolproof. For example if a button is not needed at a particular time it is disabled so you cannot press it by accident.

EZ Percent #1, which solves the problem "What is X percent of Y?" For example "What is 20 percent of 150?".

EZ Percent #2, which solves the problem "What is X plus Y percent?" (example: what is 60 plus 20 percent?).

EZ Percent #3, which solves the problem "What is X minus Y percent?" (example: what is 1024 minus 32 percent).

EZ Percent #5, which solves the problem "What number is X a Y percentage of? (example: 12 is 75% of what number?).

EZ Percent #6, which solves the problem "What percent greater than X is Y?" (example: What percent greater than 75 is 100?).

These apps are so easy to use, we guarantee your stress levels will drop and your productivity will rise just as quickly!

As always, we welcome your feedback. If you have any questions or suggestions, please let us know at info@ringoo.co.uk.

EZ Percent #4 solves the problem "What is X as a percentage of Y?" (example: what is 50 as a percentage of 200?). That's the language the calculator uses, the same language you use. Not a mathematical symbol in sight. Have a look at the screenshots and you'll see what we mean.

Check out our other EZ Toolz Percentage apps:

EZ Percent VAT, an extremely easy to use VAT calculator, which adds the current VAT rate to an amount, or subtracts VAT.

EZ Percent All7, which gives you all the above calculators in one app, with NO ADS, all for less than the price of a beer!

## EZ Percentage #3 for Android

Part of our EZ Toolz series, this app is much easier to use than a calculator! And it's free!Most percentage calculators on the market try to show you how clever they are by cramming in loads of functions. The result - some of them are more complex than a scientific calculator! With our EZ Toolz series, we turn this philosophy on it's head and make our calculators as simple to use as we possibly can.

Just because the app is simple to use doesn't mean it is basic in quality. You get nice big buttons that vibrate when you touch them, and a nice clear easy to read display.

We have made this app completely foolproof. For example if a button is not needed at a particular time it is disabled so you cannot press it by accident.

EZ Percent #1, which solves the problem "What is X percent of Y?" For example "What is 20 percent of 150?".

EZ Percent #5, which solves the problem "What number is X a Y percentage of? (example: 12 is 75% of what number?).

EZ Percent #6, which solves the problem "What percent greater than X is Y?" (example: What percent greater than 75 is 100?).

These apps are so easy to use, we guarantee your stress levels will drop and your productivity will rise just as quickly!

As always, we welcome your feedback. If you have any questions or suggestions, please let us know at info@ringoo.co.uk.

EZ Percent #3 solves the problem "What is X minus Y percent?" (example: what is 1024 minus 32 percent). That's the language the calculator uses, the same language you use. Not a mathematical symbol in sight. Have a look at the screenshots and you'll see what we mean.

Check out our other EZ Toolz Percentage apps:

EZ Percent #2, which solves the problem "What is X plus Y percent?" (example: what is 100 plus 20 percent?).

EZ Percent #4, which solves the problem "What is X is a percentage of Y?" (example: what is 50 as a percentage of 325.6?).

EZ Percent VAT, an extremely easy to use VAT calculator, which adds the current VAT rate to an amount, or subtracts VAT.

EZ Percent All7, which gives you all the above calculators in one app, with NO ADS, all for less than the price of a beer!

## EZ Percentage #2 for Android

Part of our EZ Toolz series, this app is much easier to use than a calculator! And it's free!Most percentage calculators on the market try to show you how clever they are by cramming in loads of functions. The result - some of them are more complex than a scientific calculator! With our EZ Toolz series, we turn this philosophy on it's head and make our calculators as simple to use as we possibly can.

Just because the app is simple to use doesn't mean it is basic in quality. You get nice big buttons that vibrate when you touch them, and a nice clear easy to read display.

We have made this app completely foolproof. For example if a button is not needed at a particular time it is disabled so you cannot press it by accident.

EZ Percent #1, which solves the problem "What is X percent of Y?" For example "What is 20 percent of 150?".

EZ Percent #3, which solves the problem "What is X minus Y percent?" (example: what is 1024 minus 32 percent).

EZ Percent #5, which solves the problem "What number is X a Y percentage of? (example: 12 is 75% of what number?).

EZ Percent #6, which solves the problem "What percent greater than X is Y?" (example: What percent greater than 75 is 100?).

These apps are so easy to use, we guarantee your stress levels will drop and your productivity will rise just as quickly!

As always, we welcome your feedback. If you have any questions or suggestions, please let us know at info@ringoo.co.uk.

EZ Percent #2 solves the problem "What is X plus Y percent?" (example: what is 100 plus 20 percent?). That's the language the calculator uses, the same language you use. Not a mathematical symbol in sight. Have a look at the screenshots and you'll see what we mean.

Check out our other EZ Toolz Percentage apps:

EZ Percent #4, which solves the problem "What is X is a percentage of Y?" (example: what is 50 as a percentage of 325.6?).

EZ Percent VAT, an extremely easy to use VAT calculator, which adds the current VAT rate to an amount, or subtracts VAT.

EZ Percent All7, which gives you all the above calculators in one app, with no ads for less than the price of a beer!

## EZ Percentage #1 for Android

Part of our EZ Toolz series, this app is much easier to use than a calculator! And it's free!Most percentage calculators on the market try to show you how clever they are by cramming in loads of functions. The result - some of them are more complex than a scientific calculator! With our EZ Toolz series, we turn this philosophy on it's head and make our calculators as simple to use as we possibly can.

Just because the app is simple to use doesn't mean it is basic in quality. You get nice big buttons that vibrate when you touch them, and a nice clear easy to read display.

We have made this app completely foolproof. For example if a button is not needed at a particular time it is disabled so you cannot press it by accident.

These apps are so easy to use, we guarantee your stress levels will drop and your productivity will rise just as quickly!

As always, we welcome your feedback. If you have any questions or suggestions, please let us know at info@ringoo.co.uk.

EZ Percent 1 solves the problem "What is X percent of Y?" For example "What is 20 percent of 150?". That's the language the calculator uses, the same language you use. Not a mathematical symbol in sight. Have a look at the screenshots and you'll see what we mean.

Check out our other EZ Toolz Percentage apps (coming soon):

EZ Percent 2, which solves the problem "What is X plus Y percent?" (example: what is 100 plus 20 percent?).

EZ Percent 3, which solves the problem "What is X minus Y percent?" (example: what is 1024 minus 32 percent).

EZ Percent 4, which solves the problem "What is X is a percentage of Y?" (example: what is 50 as a percentage of 325.6?).

EZ Percent 5, which solves the problem "What number is X a Y percentage of? (example: 12 is 75% of what number?).

EZ Percent 6, which solves the problem "What percent greater than X is Y?" (example: What percent greater than 75 is 100?).

## Martingale Session Manager

The purpose of the Martingale Session Manager (MSM) is to help you to manage a Martingale, or "doubling up" betting session. It will handle all the maths, all you have to do is enter the odds of the next horse, and tell the program whether you won or lost.

People using the Martingale system very often bet on favourites, so let's say the first horse has odds of 3 to 1 on. You would enter 1 to the left of "to" and 3 to the right of "to".

You would then click on the "Calculate Stake" button". Your stake would appear in the box to the right of the button. You then place your bet.

If you win, simply click on the "Start New Session" and the program resets, and you can start again from the beginning.

If you lose, click on the "No" button, and enter the odds of the next horse.

THE CLEVER BIT....

This time, when you click the "Calculate Stake" button, the program takes into account the money you have lost during the session, and the stake is adjusted so that if your next horse wins, not only do you achieve your target winnings, but you also win your stake(s) back that you have lost during the session.

FEATURES:

Works on QVGA (320 x 240 e.g. HTC Tattoo) screens upward.

Easy to use - everything you need is on one screen.

Built in help screen.

FREE! With ad support.

Please note, use of this program will not increase your chances of winning, it's purpose is to make the betting session simpler by handling all the maths for you.

Enjoy!

## Timesheet Pro For Android

Here we have the much-improved Timesheet Pro, perfect for adding worktimes together in HRS:MINS format. You know how much of a headache that can be, even with a calculator.

WE'VE LISTENED TO YOUR FEEDBACK.

We took note of all your suggestions, and these are the improvements we have made over our original Timesheet app:

You wanted a cleaner, easier to use interface. Check out the screen shots I'm sure you'll agree we nailed that.

You wanted vibrating buttons, for positive click indication. We've done that.

You wanted more error prevention - so we built in safeguards for adding empty cells, mins values larger than 59 etc. We can't get the darn thing to crash, we hope you can't either!

You wanted bigger, easier to read numbers, so we upgraded to a 28 point typeface. Again, have a look at the screenshots.

You didn't want to pay for it. No problem - it's now totally free! It's ad supported (hey guys we have to eat :P), but don't worry, we told the guys at AdMob we only wanted the coolest ads for our users!

As usual, if you have any more suggestions let us know at info@ringoo.co.uk - we always love to hear from you.

Enjoy the app!

## PlayNet for Android

Did we tell you that PlayNet for Android is awesome?

Download it now FOR FREE!

Start broadcasting your services immediately to clients in your area FOR FREE!

Advertise anything you like - this is an adults-only network.....

FREE Advertising FOR ANYTHING, FOR FREE and FOR EVER!

And there's no catches whatsoever - ever!

Why is everything free you may wonder? Because it's ad supported! All we ask is that you click a banner ad every now and again. You don't have to, but we hope you will. Who knows - you might even find the ad useful!

The app is incredibly simple to use, and works on any Android phone (HTC, Samsung etc).

It uses the GPS chip in your phone and the Internet - in a really exciting and innovative way.

This app is big AND it's clever! You can broadcast a message up to 150 characters (bigger than a text message) as many times as you like to an unlimited number of network users in your area. All they need is the same app.

Check out the video and the screenshots!

## HooZout for Android v1.1

Forget about all the humdrum geo-based social networks that are doing the rounds. You know the kind, each one has a thousand ways of keeping you all private and secret. Strictly friends only - as long as you don't make any new ones of course! Some might say anti-social networks. Is that what you really want? We give you an exciting and innovative alternative....

HooZout is like your own mobile radio station - it allows you to broadcast your presence within your local area (up to five miles) and include a message of up to 150 characters. Anyone else on the network can see your broadcast, and how far you are away. That's a really cool feature that no other app can come close to. Why? Because this app turns social networking on it's head - it actually brings people together rather than encouraging them to interact remotely. And it's totally free!

And you can easily see who's nearby with the touch of a button. Touch the five mile button (or 1 mile or quarter mile) and a list of up to fifty users will appear for you to scroll through, with their message and proximity. Way way better than seeing a bunch of meaningless flags on a map.

Click on a user in the list and see their extended details such as email address and phone number (you can withold most of these details if you like).

HooZout does away with most of the privacy features that come built in with 'ordinary' social networking apps. They are essential for protecting children of course, but for fun-loving grown-ups they can get in the way! With us, you are recognised as a responsible adult who is perfectly capable of interacting with new friends. If the idea of meeting new people scares you, DON'T install this app!

As well as being awesome fun, HooZout can also make you money - you can use it as a free advertising tool....

Here are some typical examples of HooZout broadcasts:

We're down the club, come and join us!

Happy hour tonight 9pm - 10pm!

Looking for a friend tonight - send me a text....

This network is set to go MASSIVE! Install it now on your Android phone, and don't forget to tell your friends! iPhone and Blackberry versions coming soon.

## MileGroup for Android

STOP PRESS! THE FIRST 100 PEOPLE WHO REGISTER THIS APP WILL GET A FREE ALL-DAY AD IN THE SCROLLING MESSAGE AREA OF THE MAIN SCREEN, WHICH WILL BE SEEN BY EVERY USER ON THE NETWORK! THESE 100 USERS WILL BE GIVEN MORE DETAILS BY EMAIL .

Milegroup is a fantastic dual purpose app which will transform your social life and your business!

MileGroup is the latest generation in social networking apps. It is a unique and highly effective tool that enables anyone to broadcast and retrieve information in a specific geographic location, giving you the ability to reach out to thousands of other nearby Milegroup users with a single click, completely free of charge.

These users could be friends, aquaintances or potential customers. The benefits of using this system could be nothing short of life-changing. It is expected by the end of 2012 the Milegroup network will have a user base of over 10 million.

Specifically designed for mobile devices, MileGroup enables you to advertise your geo location to anyone running the app within five miles of you (there are options to change this to a quarter mile, or five miles).

Milegroup uses the latest lightweight data transfer technology to keep your bills down and your download speed up.

BENEFITS:

Broadcast to many users at the click of a button - much quicker and cheaper than sending 100 texts!

See who's around - no more "I wonder which of my friends are out tonight?".

See what events are going on where you are.

Advertise your goods or services to passing trade quickly, cheaply (free) and easily.

Great for meeting new friends.

MileGroup brings people together! Unlike some other social network systems that encourage you to interact remotely.

SOCIAL NETWORKING.

Just imagine - you are out on the town on Saturday night, and you want to see who else is out. With a click of a button you can instantly see a list of nearby friends! Click another button and you put yourself on the network for nearby friends to see! You can even include a message (up to 50 characters) such as "Hey! We're in our favorite club, come and join us!"

FREE ADVERTISING.

Just imagine - the same night you are running a manager running a bar in the city centre. Thousands of revellers are out there checking out MileGroup on their cellphones. With a click of a button you can instantly advertise your promotions (up to 50 characters) to them COMPLETELY FREE OF CHARGE.

MileGroup is ad supported, so there is no charge whatsoever for using it.

Check out the screenshots and video - this app is going to change your life forever!

WHAT ARE YOU WAITING FOR? INSTALL IT NOW!

## Ultimate Op Amp

Ringoo Software is proud to present our latest app in our famous Ultimate series - Ultimate Op Amp.

As usual there's a great tutorial module, with an overview of the more popular Op Amp circuit configurations:

As usual there's a great tutorial module, with an overview of the more popular Op Amp circuit configurations:

Inverting amplifier.

Non inverting amplifier.

Voltage follower.

Summing amplifier.

Difference amplifier.

Integrating circuit.

Differentiating circuit.

Then there's the test module, so you can see what you've learned from the tutorial module.

Finally, four useful calculators are included:

1. A three-way non inverting amplifier calculator. Put in any two values from Rin, Rf and gain, and the calculator will give you the missing value.

2. An inverting op amp circuit calculator. Has all the same features of the non-inverting calculator.

3. A summing amplifier calculator. Takes a summing amp with three inputs and gives you the Vout.

4. A difference amplifier calculator. Putting the complex equation for this through a normal calculator is not recommended. Using our app it couldn't be simpler!

We are sure that you'll be delighted with this app, it's easily the best of it's kind on the market. The price? Cheaper than a candy bar!

But don't take our word about the quality - check out the video!

If you have any comments or feedback on Ultimate Op Amp, or any of our other apps, we'd love to hear from you. Drop us a line at info@ringoo.co.uk.