Operit: Calculator & Graphs
Contains adsIn-app purchases
Everyone
info
50+
Downloads
About this app
Operit is a calculator that does the usual well, and also what you were missing.
BASIC AND SCIENTIFIC
Write the whole sum and see the result as you type. Tap anywhere in the expression to place the cursor and fix a mistake mid-sum, without deleting back to it. Press and hold the result to copy it.
RULE OF THREE
Direct and inverse. Fill three boxes and the fourth appears, with the arithmetic spelled out below.
UNIT CONVERTER
Eleven categories: length, mass, temperature, time, data, speed and more.
FUNCTION GRAPHS
Type f(x) and watch it drawn. Pan and zoom with your fingers.
HISTORY
Your sums are kept. Bring any result back and carry on working with it.
YOUR WAY
Light or dark theme, how many decimals you want, how thousands are separated, and degrees or radians.
OPERIT PREMIUM
• Several functions at once on the same graph, with roots, maximums and minimums
• History from previous sessions
• Finance: VAT, discounts, instalments and compound interest
• Geometry: areas, perimeters and volumes
• Electronics: Ohm's law, power and resistor colour codes
• Body: body mass index, basal metabolism and ideal weight
• Algebra: equations, progressions, combinatorics, GCD and LCM
• No ads
By monthly or yearly subscription, or a one-time purchase forever.
WHAT WILL ALWAYS BE FREE
The basic calculator, the scientific one, the rule of three and the unit converter. What the app already did, it will keep doing without paying.
BASIC AND SCIENTIFIC
Write the whole sum and see the result as you type. Tap anywhere in the expression to place the cursor and fix a mistake mid-sum, without deleting back to it. Press and hold the result to copy it.
RULE OF THREE
Direct and inverse. Fill three boxes and the fourth appears, with the arithmetic spelled out below.
UNIT CONVERTER
Eleven categories: length, mass, temperature, time, data, speed and more.
FUNCTION GRAPHS
Type f(x) and watch it drawn. Pan and zoom with your fingers.
HISTORY
Your sums are kept. Bring any result back and carry on working with it.
YOUR WAY
Light or dark theme, how many decimals you want, how thousands are separated, and degrees or radians.
OPERIT PREMIUM
• Several functions at once on the same graph, with roots, maximums and minimums
• History from previous sessions
• Finance: VAT, discounts, instalments and compound interest
• Geometry: areas, perimeters and volumes
• Electronics: Ohm's law, power and resistor colour codes
• Body: body mass index, basal metabolism and ideal weight
• Algebra: equations, progressions, combinatorics, GCD and LCM
• No ads
By monthly or yearly subscription, or a one-time purchase forever.
WHAT WILL ALWAYS BE FREE
The basic calculator, the scientific one, the rule of three and the unit converter. What the app already did, it will keep doing without paying.
Scientific, graphs, unit converter, rule of three and modules. No clutter.
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What’s new
Version 2.0.0:
- Completely redesigned app
- Function graphs with roots, maximums and minimums
- Unit converter with eleven categories
- Finance, geometry, electronics, body and algebra modules
- History of your calculations, including earlier sessions
- Tap the display to place the cursor and fix a mistake mid-sum
- Degrees and radians in scientific mode
- Press and hold the result to copy it
- Operit Premium: no ads, by subscription or one-time purchase
- Completely redesigned app
- Function graphs with roots, maximums and minimums
- Unit converter with eleven categories
- Finance, geometry, electronics, body and algebra modules
- History of your calculations, including earlier sessions
- Tap the display to place the cursor and fix a mistake mid-sum
- Degrees and radians in scientific mode
- Press and hold the result to copy it
- Operit Premium: no ads, by subscription or one-time purchase
App support
About the developer
Cristian Arias Mejuto
hayaxelectronics@gmail.com
P.º Marítimo, 13, 2D
12580 Benicarló
Spain
