# Description

Free42 is a re-implementation of the HP-42S calculator and the HP-82240 printer.

It is a complete rewrite, not using any HP code, and it does not require an HP-42S ROM image.

Free42 is an Open Source project. The executables and source code are released under the terms of the GNU General Public License, version 2.

All third-party code used in Free42 is either in the public domain, or licensed under terms compatible with GPLv2, or used with the authors' permission.

It is a complete rewrite, not using any HP code, and it does not require an HP-42S ROM image.

Free42 is an Open Source project. The executables and source code are released under the terms of the GNU General Public License, version 2.

All third-party code used in Free42 is either in the public domain, or licensed under terms compatible with GPLv2, or used with the authors' permission.

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

4.8

892 total

5 775

4 79

3 15

2 9

1 14

Buzz Lange

Excellent RPN Calculator This is the greatest app for running numbers on any platform. My Galaxy S5 just rips through tricky numbers in meetings and catches bad ideas in hand waving, water walking spread sheets that can cause delays and waste money. If you can think in RPN, follow the documentation trail and load this app on everything you own. Get the big gun on your side, and shoot low--they might be crawling..

Johnfortich Vista

A father's gift. I had a calculator like this. My father gave it to me when he worked for 25yrs in Middle East. I was a fool to have lost it when a thief stole my bag back in college. Never gotten over it. Still looking for the very same type of calculator even now, if i could afford it. The app is brilliant. Warms my heart just using it. You don't know how much this made me happy somehow. Thank you.

Martin Stabb

I love it I love this calculator (Android ver). I've used it for work running programs in the twinkling of an eye where my physical 35s takes upto 45 seconds. I've been an hp fan since 1980 and now wish I'd got a 42s. Planning to get an iphone6 so hope it works as well on that. Thank you Thomas O.

User reviews

Great app! Nice job... Updated to 5*. I only have this app four stars because now I have no need for my prized physical version.

Fantastic HP calculator emulator This is so much like my beloved HP 32s (my favorite of my 4 HP's (21c, 25c, 11c, and 32s). The most significant difference (and it's a plus) is that in displays both the X and Y registers. This seems to be one of the harder HP emulators to find but I think its one of the best. In my opinion, calculators like the 32 and 11c give you almost anything you need without all the (again, my opinion) glitz of the whiz-bang calculators with graphing, etc. Before you get on my case, I understand that this stuff is useful for some but I don't need it and it just gets in the way of all the functionality I want in a calculator. (p.s. I still have and use my 11c and 32s)

Spot on This calculator app captures the supreme usability and usefulness of the old HP42s as well as a phone or tablet possibly can. Cost or rarity is no longer an obstacle to making regular use of that excellent RPN calculator. In case anyone is wondering, the reason this calculator wants location is because you can grab that info within the app and use it in a calculation. There's no permission for it to phone home.

Excellent! By far the most used app on my phone. Works just like the HP-42s sitting right next to me, which I no longer have to carry back and forth to the office.

Love it but default graphics are poor After using this 42S calc on my pc for a few years, I am really glad that it is now available on Android. My only qualm is that the graphics on a hi-res screen is poor.

Chummy Awesome.....this is a must have app for those that can't survive with there trusted HP42s

The best calculator ever has been saved for the future generations The HP-42s was my work-horse during engineering classes. It is simple, efficient and powerful. I simply _love_ that calculator. I still own my HP-42s, though there must be some kind of an electrical leak, because batteries are draining way too fast. Anyway, the Free42 app ensures I have my HP-42s with me wherever I go. Even more, it saves the day for future generations. Thomas Okken deserves a statue for that!

# What's New

Eentering a number with an empty exponent (e.g. 1E or 1E-) would yield <Not a Number>. Fixed.

When the screen orientation was set to "automatic", it would not honor any system-wide orientation lock. Fixed.

# Additional information

Updated

November 12, 2014

Size

3.2M

Installs

50,000 - 100,000

Current Version

1.5.5

Requires Android

1.5 and up

Content Rating

Low Maturity

Permissions

Report

Flag as inappropriate Offered By

Thomas Okken

Developer

# Similar

## Classic Calculator

This application has been designed and engineered for easy operation at any level. The natural display and enhanced features makes it versatile and the perfect choice for high school and college students alike.

* Multi-skin

* Copy clipboard

* Percentages

* Memories

* Trig functions in degrees, radians or grads

* Fixed-point display modes

* Configurable digit grouping and decimal point

* Degrees, minutes and seconds.

* Adjustable size digit

## Scientific Calculator

TechCalc contains 11 computing modes in one application + a handy reference section.

Modes included are:

Modes included are:

* Basic Mode,

* Scientific Mode,

* 64-bit Programmer Mode (Hex, Oct, Bin and Dec),

* Graphing (save copy of graph to sdcard),

* Matrices,

* Complex Numbers (cartesian, polar, using Euler's identity),

* Quick Formulas,

* Quick Converter,

* Time Calculator,

* Equation Solver,

* Calculus (Derivative, Definite Integral, Taylor Series & Indefinite Integral) - requires Android version 2.3 or higher

+ the Periodic Table of Elements!

Features include:

* All Trigonometric operations (radians, degrees or gradients)

* Powers & Roots

* Logs and Antilogs

* Factorial, Modulus & Random Numbers functions

* HCF, LCM, Prime factorization

* Pol() & Rec() Functions

* Permutations (nPr) and Combinations (nCr)

* Statistics

* Fractions Mode

* A wide range of conversion categories and constants

* 20 Memory Registers in each of the calculation modes

* Detailed calculation history

* Extensive Help and Reference

* Highly customizable via the Settings

The reference section includes:

* Physical Laws

* Names in the Metric System

* Mathematical Tables

* Elementary & Linear Algebra

* Trigonometric Identities

* Differentiation & Integration Rules

* Statistics Formulas

* Vector Mathematics

* ASCII, Fractional Bits & Roman Numeral Converters

* pH, Interpolation, Body Mass Index (BMI) & Proportion Calculators

* Sigma & Pi Notation

Please email any questions that are not answered in the Help section.

This is an ad-supported app - upgrade to an ad-free version for USD 0.99 (or the equivalent in local currency) via https://play.google.com/store/apps/details?id=com.roamingsquirrel.android.calculator_plus

## Panecal Scientific Calculator

Appsys

1

Panecal is a scientific calculator application for technical work such as information engineering, mechanical engineering, dynamics, measurements, and construction, an essential item for engineers and science students.

Panecal scientific calculator can display and correct mathematical formulas. You can use it to check formulas, which enables you to prevent input errors and calculation mistakes. Panecal has functions such as editing and recalculating calculation formulas entered in the past, as well as the capability to use variable memory to only change specific values and do calculations.

A cursor is displayed on the screen, and you can tap the screen or push arrow keys to quickly move to the location you want to edit. Panecal allow you to swipe to scroll through formulas, as well as copying and pasting using long tapping, which makes it a strong and flexible application with an intuitive user interface.

[Main functions]

- Move the cursor by tapping and swipe to scroll through the screen

- Copy and paste

- Can select from a history list of formulas calculated in the past, edit them, and recalculate

- Can calculate binary numbers, octal numbers, decimal numbers, hexadecimal numbers up to 32 bits, and do radix conversion

- Can use M+/M- memory functions and 6 types (A-F) of variable memory

- Arithmetic operations, inverse trigonometric functions, logarithmic functions, power functions, power root functions, factorials, absolute values, and percent calculations

- Can select degrees, radians, or grads for angle units

- Can select from FloatPt (floating decimal mode), Fix (fixed decimal mode), Sci (index mode), and Eng (index is in multiples of 3) for displaying values

- Can set types of decimals and grouping separator settings

- Horizontal screen display

- Check key input with vibration and orange coloring

Panecal scientific calculator can display and correct mathematical formulas. You can use it to check formulas, which enables you to prevent input errors and calculation mistakes. Panecal has functions such as editing and recalculating calculation formulas entered in the past, as well as the capability to use variable memory to only change specific values and do calculations.

A cursor is displayed on the screen, and you can tap the screen or push arrow keys to quickly move to the location you want to edit. Panecal allow you to swipe to scroll through formulas, as well as copying and pasting using long tapping, which makes it a strong and flexible application with an intuitive user interface.

[Main functions]

- Move the cursor by tapping and swipe to scroll through the screen

- Copy and paste

- Can select from a history list of formulas calculated in the past, edit them, and recalculate

- Can calculate binary numbers, octal numbers, decimal numbers, hexadecimal numbers up to 32 bits, and do radix conversion

- Can use M+/M- memory functions and 6 types (A-F) of variable memory

- Arithmetic operations, inverse trigonometric functions, logarithmic functions, power functions, power root functions, factorials, absolute values, and percent calculations

- Can select degrees, radians, or grads for angle units

- Can select from FloatPt (floating decimal mode), Fix (fixed decimal mode), Sci (index mode), and Eng (index is in multiples of 3) for displaying values

- Can set types of decimals and grouping separator settings

- Horizontal screen display

- Check key input with vibration and orange coloring

[Disclaimer]

Please note in advance that Appsys is not responsible for any damage or lost profits caused by the use of this software, or any claims from third parties.

## 15C Scientific Calculator Free

It is a demo version of Vicinno 15C Scientific Calculator. It demonstrates how Vicinno 15C works on various Android devices. The functionality of the demo version is limited since both f and g keys are disabled. If you are interested in its pro version, please search for "Vicinno" on Google Play.

15C Scientific Calculator

As a powerful emulator of HP 15C Scientific Calculator, Vicinno 15C Scientific Calculator provides all functions of the world-renowned HP 15C RPN high-end scientific programmable calculator for Android. It uses the identical mathematics and calculations with the original to give you the same precision and accuracy.

It can perform numerical integration and solve the roots of equations in addition to supporting complex numbers and matrix calculations.

**** Cool Tip: click the upper right logo to see the settings page for more options. ****

**** Please be noted: the f (i) in our app works a little differently from the real calculator: instead of hold and release, just click the f (i), the display will show the imaginary part for a second, then switch to real part automatically. *****

★ Features include:

• Root finder

• Numeric integration

• Complex numbers

• Matrix operations

• Hyperbolic and inverse hyperbolic trig functions

• Probability (combinations and permutations)

• Factorial, % change, and absolute value

• Random number generator

• RPN entry

• Programmable

• enable/disable key click sound

• Comma as decimal point option

• Automatically save/restore settings

• Touch logo to see all settings

• Direct access to support forum from app

• Support Android Tablet

• More

★ Support:

Feel free to contact us at support@vicinno.com.

★ Stay tuned:

Like us: www.facebook.com/vicinno

Follow us: www.twitter.com/vicinno

## Scientific Calculator for FREE

Our scientific calculator is provided to you in full and for free. Do you have difficulty in calculating scientific matter you do not worry use scientific calculator application. This complete calculator is helpful for you as a student to find a precise mathematical results. Can have quick access to certain mathematical functions when needed, so that the right choice for you

Scientific Calculator we have features such as:

* The history with this feature you can see the history of the previous results,

* Memory Features

* Traditional algebraic or RPN operation

* Result history * Unit conversions

* Physical constants table

* Percentage

* Binary, octal, and hexadecimal (can be enabled in Settings)

* Trig functions in degrees, radians or graduate

* Scientific, engineering and fixed-point display modes

* Configurable digit grouping and decimal point, and many others in the full scientific calculator

## Scientific Calculator

PowerCalc is a powerful Android scientific calculator with real look. It is one of the few Android calculators with complex number equations support. Features:

* Real equation view editor with brackets and operator priority support

* Component or polar complex entry/view mode

* Equation and result history

* 7 easy to use memories

* Large universal/physical/mathematical/chemical constant table

* Degrees, radians and grads mode for trigonometric functions

* Fixed, scientific and engineering view mode

* Easy to use with real look

* Advertisement free!

Would you like to have multiline equation editor with equation syntax hightiting, actual bracket highlighting and trigonometric functions of complex argument support? Upgrade to PowerCalc Pro.

* Multiline equation editor

* Equation syntax highliting

* Actual bracket highliting

* Trigonometric functions with complex argument support

Stay tuned! We are preparing new functionalities:

* Unit conversions

* Radix modes

* Help

Found bug? Please contact us to fix it.

If you find PowerCalc useful please upgrade to PowerCalc Pro to support further development. Thank you!

## WRPN 16c

It uses Reverse Polish Notation (RPN), which uses the ENTER key instead of the "=" (equals) key.

In addition to all the functions you'd expect from an ordinary calculator, WRPN 16c also has many features specifically designed for the computer professional:

• Word sizes from 1-64 bits per word

• Signed math (1's complement, 2's complement, unsigned)

• Logical operators (and, or, xor, not, masks, etc)

• Bit-wise operators (shift, rotate, rotate with carry, etc)

• 32 storage registers

• 4 position stack

• 203 lines of program memory

WRPN 16c is available on other platforms, such as Windows, MacOS, and Linux from the following web site http://www.wrpn.emmet-gray.com

Note: The source code to WRPN 16c is also available!

## MathAlly Graphing Calculator

MathAlly

1

MathAlly Graphing Calculator is quickly becoming the most comprehensive free Graphing, Symbolic, and Scientific Calculator for Android.

Here are some of our current features:

Basics:

-Enter values and view results as you would write them

-Swipe up, down, left, or right to quickly switch between keyboard pages.

-Long click on keyboard key to bring up dialog about key.

-Undo and Redo keys to easily fix mistakes.

-Cut, Copy, and Paste.

-User defined functions with f, g, h

Symbolic Calculator:

-Simplify and Factor algebra expressions.

-Polynomial long division.

-Solve equations for a variable.

-Solve equations with inequalities such as > and <

-Solve systems of equations.

-Simplify trigonometric expressions using trigonometric identities.

Graphing:

-Graph three equations at once.

-View equations on graph or in table format.

-Normal functions such as y=x^2

-Inverse functions such as x=y^2

-Circles such as y^2+x^2=1

-Ellipses, Hyperbola, Conic Sections.

-Inequalities

-Logarithmic scaling

-Add markers to graph to view value at given point.

-View delta and distance readings between markers on graph.

-View roots and intercepts of traces on graph.

-Regression

Calculus:

-Differentiation.

-Definite integration.

Other Features:

-Complex numbers

-Hyperbolic functions

-nCr and nPr functions

-Change numeric base between binary, octal, decimal, and hexadecimal

-Bitwise operators AND, OR, XOR, and NOT

-Matrices.

-Vector dot product and norm.

FAQ’s

Q. Is there are tutorial anywhere explaining how to use the graphing calculator?

A. There are three into tutorials in the app for the calculator, graph equations, and graph screens. Additional tutorials can be found on our website http://www.mathally.com/

Q. How do I get to the keys for pi, e, solve, etc?

A. There are four keyboard pages. Each swipe direction across the keyboard moves you to a different page. The default page is the swipe down page. To get to the page with trig functions, swipe left. To get to the matrix keys, swipe up. To get to the last page, swipe right. No matter what page you are on, the swipe direction to move to a specific page is always the same.

Q. What do you have planned for future releases?

A. You can keep up to date on the latest news on our blog at http://mathally.blogspot.com/ . This news will include what is coming up in future releases. Also feel free to leave comments and let me know what you think!

If you find a bug or have questions, please email me.

Math Ally

## Calculator Plus Free

USA TODAY named Calculator Plus among its "25 Essential Apps", calling it the "handy calculator app that's garnered great user ratings"

I'm Calculator Plus - the perfect calculator for Android. I'm easy to use and beautifully designed to do things better than your phone or handheld calculator ever did.

I love saving you time and effort. I remember everything you calculate, and let you review it anytime, making me perfect for shopping, doing homework, balancing checkbooks, or even calculating taxes. And if you quit the calculator and go do something else, it's all still here when you come back. You'll never need to type the same calculation twice again.

I'm attractive and effective and I make great use of your big, beautiful display:

- You'll never forget where you are in a calculation - I show you exactly what's happening at all times

- I remember everything, so you can take a break, then come back later and pick up where you left off

- I show your calculations in clear, elegant type that's easy to read, with commas just where they should be

- You can use backspace anytime to correct a simple mistake, instead of starting over

- Use memory to keep a running total you can actually see

- My percentage key shows exactly what it did, so you're not left confused

- Swipe memory keys aside for advanced math functions!

- NEW! Full support for Samsung Multi-Window - true multitasking for your Galaxy device.

- My intuitive, lovable design makes it simple to do everyday calculations on your phone or tablet

Let Calculator Plus and your phone or tablet finally put that handheld calculator to rest!

This is an ad supported version - our ad-free version is also available.

Calculator Plus (C) 2015 Digitalchemy, LLC

## Mobi Calculator FREE

IP

1

Universal free, every day use calculator with scientific features. One of top.

Good for simple and advanced calculations!

Good for simple and advanced calculations!

* Math expressions calculation (developed on RPN-algorithm but no RPN-calculators' kind UI!)

* Percentages (calculation discount, tax, tip and other)

* Radix mode (HEX/BIN/OCT)

* Time calculation (two modes)

* Trigonometric functions. Radians and degrees with DMS feature (Degree-Minute-Second)

* Logarithmic and other functions

* Calculation history and memory

* Digit grouping

* Cool color themes (skins)

* Large buttons

* Modern, easy and very user friendly UI

* Very customizable!

* NO AD!

* Very small size of apk

* More features will be added. Stay in touch! :)

http://facebook.com/mobicalc

http://twitter.com/mobicalc

OLD NAME is Cube Calculator.

Pro version is available in Google Play.

---

KW: mobicalc, mobicalculator, mobi, calc, cubecalc, mobicalcfree, android calculator, percentage, percent, science, scientific calculator, advanced, sine, simple, best, kalkulator, algebra, basic

## 15C Scientific Calculator

As a powerful emulator of HP 15C Scientific Calculator, Vicinno 15C Scientific Calculator provides all functions of the world-renowned HP 15C RPN high-end scientific programmable calculator for Android. It uses the identical mathematics and calculations with the original to give you the same precision and accuracy.

It can perform numerical integration and solve the roots of equations in addition to supporting complex numbers and matrix calculations.

**** Cool Tip: click the upper right logo to see the settings page for more options. ****

**** Please be noted: the f (i) in our app works a little differently from the real calculator: instead of hold and release, just click the f (i), the display will show the imaginary part for a second, then switch to real part automatically. *****

★ Features include:

• Root finder

• Numeric integration

• Complex numbers

• Matrix operations

• Hyperbolic and inverse hyperbolic trig functions

• Probability (combinations and permutations)

• Factorial, % change, and absolute value

• Random number generator

• RPN entry

• Programmable

• enable/disable key click sound

• Comma as decimal point option

• Automatically save/restore settings

• Touch logo to see all settings

• Direct access to support forum from app

• Support Android Tablet

• More

★ Support:

Feel free to contact us at support@vicinno.com.

★ Stay tuned:

Like us: www.facebook.com/vicinno

Follow us: www.twitter.com/vicinno

## Panecal Plus

Appsys

1

Panecal is a scientific calculator application for technical work such as information engineering, mechanical engineering, dynamics, measurements, and construction, an essential item for engineers and science students.

Panecal is a scientific calculator that can display and correct mathematical formulas. You can use it to check formulas, which enables you to prevent input errors and calculation mistakes. Panecal has functions such as editing and recalculating calculation formulas entered in the past, as well as the capability to use variable memory to only change specific values and do calculations.

A cursor is displayed on the screen, and you can tap the screen or push arrow keys to quickly move to the location you want to edit. Panecal allow you to swipe to scroll through formulas, as well as copying and pasting using long tapping, which makes it a strong and flexible application with an intuitive user interface.

[Main functions]

- Move the cursor by tapping and swipe to scroll through the screen

- Copy and paste

- Can select from a history list of formulas calculated in the past, edit them, and recalculate

- Can calculate binary numbers, octal numbers, decimal numbers, hexadecimal numbers up to 32 bits, and do radix conversion

- Can use M+/M- memory functions and 6 types (A-F) of variable memory

- Arithmetic operations, inverse trigonometric functions, logarithmic functions, power functions, power root functions, factorials, absolute values, and percent calculations

- Can select degrees, radians, or grads for angle units

- Can select from FloatPt (floating decimal mode), Fix (fixed decimal mode), Sci (index mode), and Eng (index is in multiples of 3) for displaying values

- Can set types of decimals and grouping separator settings

- Horizontal screen display

- Check key input with vibration and orange coloring

Panecal is a scientific calculator that can display and correct mathematical formulas. You can use it to check formulas, which enables you to prevent input errors and calculation mistakes. Panecal has functions such as editing and recalculating calculation formulas entered in the past, as well as the capability to use variable memory to only change specific values and do calculations.

A cursor is displayed on the screen, and you can tap the screen or push arrow keys to quickly move to the location you want to edit. Panecal allow you to swipe to scroll through formulas, as well as copying and pasting using long tapping, which makes it a strong and flexible application with an intuitive user interface.

[Main functions]

- Move the cursor by tapping and swipe to scroll through the screen

- Copy and paste

- Can select from a history list of formulas calculated in the past, edit them, and recalculate

- Can calculate binary numbers, octal numbers, decimal numbers, hexadecimal numbers up to 32 bits, and do radix conversion

- Can use M+/M- memory functions and 6 types (A-F) of variable memory

- Arithmetic operations, inverse trigonometric functions, logarithmic functions, power functions, power root functions, factorials, absolute values, and percent calculations

- Can select degrees, radians, or grads for angle units

- Can select from FloatPt (floating decimal mode), Fix (fixed decimal mode), Sci (index mode), and Eng (index is in multiples of 3) for displaying values

- Can set types of decimals and grouping separator settings

- Horizontal screen display

- Check key input with vibration and orange coloring

[Disclaimer]

Please note in advance that Appsys is not responsible for any damage or lost profits caused by the use of this software, or any claims from third parties.

## Scientific Calculator

The app is a powerful Android scientific calculator with real look. It is one of the few Android calculators with complex number equations support. Features:

* Real equation view editor with brackets and operator priority support

* Component or polar complex entry/view mode

* Equation and result history

* 7 easy to use memories

* Large universal/physical/mathematical/chemical constant table

* Degrees, radians and grads mode for trigonometric functions

* Fixed, scientific and engineering view mode

* Easy to use with real look

* Advertisement free!

Would you like to have multiline equation editor with equation syntax hightiting, actual bracket highlighting and trigonometric functions of complex argument support? Upgrade to PowerCalc Pro.

* Multiline equation editor

* Equation syntax highliting

* Actual bracket highliting

* Trigonometric functions with complex argument support

Stay tuned! We are preparing new functionalities:

* Unit conversions

* Radix modes

* Help

* Real equation view editor with brackets and operator priority support

* Component or polar complex entry/view mode

* Equation and result history

* 7 easy to use memories

* Large universal/physical/mathematical/chemical constant table

* Degrees, radians and grads mode for trigonometric functions

* Fixed, scientific and engineering view mode

* Easy to use with real look

* Advertisement free!

Would you like to have multiline equation editor with equation syntax hightiting, actual bracket highlighting and trigonometric functions of complex argument support? Upgrade to PowerCalc Pro.

* Multiline equation editor

* Equation syntax highliting

* Actual bracket highliting

* Trigonometric functions with complex argument support

Stay tuned! We are preparing new functionalities:

* Unit conversions

* Radix modes

* Help

## scientific calculator

NHN-1 is a free advanced engineering and scientific calculator with a transparent widget that has fractions and percentage:

•A resizeable widget with arithmetic, percentage button, and fractions.

•Expression (formula) based input.

•Fraction input and output with conversion to proper fraction, mixed fraction and decimal. Even the quadratic or cubic root functions, for instance, will return fractions when the answer can be written as a fraction.

•Full history with buttons that load old results, in case you need to start over from a previous point.

•Unlimited memory slots that can be named and are always displayed on screen.

•Multiple input fields except on small phones. This let's you do short side calculations without losing your place.

•Pre-packaged functions for quadratic equations as well as many geometric formulae.

•Buttons that store user defined functions that are created by binding an argument to a binary operator.

•Visualization of multivalued complex functions (roots, inverse trigonometric, logarithm)

•Visualization of quadratic and cubic functions

•Visualization of angles returned from inverse trigonometric functions.

•Complex numbers are very easy to work with, and all functions work with complex numbers where they are defined (inverse hyperbolic cosine, for instance).

•There is a fourth layout for small phones that is not shown in the screen shots.

•A unit conversion utility that lets you build arbitrary composite units. Conversion factors are written to the history, so you can bind the factor with multiplication to do the same conversion many times.

The layouts are designed to be ergonomic for each of four device sizes in portrait and landscape. Here are some examples of what we've done to make the calculator easy and speedy to work with:

•On small tablets in landscape, the keys are split so you can operate the calculator with two thumbs.

•On small phones, the numeric keypad is right under your thumb when holding the device with one hand.

•Square root, square, inverse and negation are all close to the numeric keypad.

•On small tablets, the long "NHN-1" button is a gesture recognizer that lets you scroll the six input fields with your left thumb. That way you don't have to let go of the device with your right hand to click an input field.

## Kal Scientific calculator

It is a very complete scientific calculator, contains most mathematical functions with the ability to perform graphics functions. It includes a library with one hundred (100) formulas of mathematics and physics ready to use, which generates a result after entering the value of its variables, it also allows to easily extend the library with your own formulas or functions, in general is very easy to use like a real calculator, includes a display for writing operations without character limit, allows you to use parentheses and respects the hierarchy of expressions, the result is displayed on the second line of the display with the ability to update or correct any character when there is an error in the expression.

Scientific calculator Features:

• Allows make function graphs

• Library formulas

• Typical operations (add, subtract, multiply, divide)

• Exponential functions and root (Nth power, nth root, squaring, square root, cube root)

• Logarithmic functions (log10, 1n, powers of 10, exp)

• Trigonometric functions (sin, cos, tan, including inverse and hyperbolic)

• Three angle modes (DEG, RAD, GRA)

• Random number generator

• Permutations (nPr) and combinations (nCr)

• Absolute value, factorial

• Allows numbers in scientific notation

• Includes major scientific constants

• Basic Operations and converting number systems (decimal, hexadecimal, octal, binary)

• Set number of decimal and thousands separator

• History of past operations and results

• Allows you to store in memory different results

• Help Manual

The following features are only available in the professional version (Kal pro).

• Expand the library with your own formulas

• Statistical Mode.

• Standard Deviation.

• Arithmetic mean.

• Sum of values.

• It does not include advertising.

## Scientific Calculator free

RealMax

1

This is a user friendly scientific calculator which can be used for your mathematical tasks.

This has following features

* All Basic Mathematical Operations

* Trigonometric operations

* Hyperbolic operations

* Logarithmic operations

* 10 variables

* HEX,DEC,OCT,BIN operations

* Fractions Support

* Degree,Minute,Second Calculations

* Degrees, Radian, Gradient Support

* Solving Linear equations

* Plot Graphs

* Common unit conversions

* Predefined Scientific Constants

* Samsung Multi Window Support

This Calculator is totally free and please report any improvements required in future releases to realmaxsoft@gmail.com.

-- FAQ --

Syntax error when enter the expression -2x-2. Solution is Use the specially given (-) button to represent negative numbers if it is not the subtract operation.

Is this Calculator Capable of working fractions. Yes. This can be used as fraction calculator. Use ‘ab/c’ button to enter fractions and see help for more information.

How HEX,BIN.DEC,OCT number entered ?. Change Calculator mode to Base with Mode button.

Can this be used as a Graph Calculator? Yes. see help for more information.

How to see calculation history? Use up and down arrow keys to browse calculator history.