Sci:Pro Calculator is a simple multi-mode calculator for your iPhone, iPad, and iPod Touch (Universal App). The app features three modes of operation: Basic, Scientific, and Programmer. Each mode features an easy-to-access history view and support for sharing results using e-mail or by copying & pasting values to and from other applications.

This is our first app for the App Store and we’re making the first version free for everyone to use without ads. If you like the app please take a moment to rate it for us. if you encounter any bugs or problems while using it please let us know and we’ll do our best to fix them as quickly as possible.

App Features:
• No Ads!
• Multi-mode Calculator (Basic, Scientific, Programmer)
• Calculation History (Swipe up/down to access)
• Full screen key layouts (in all orientations)
• Multiple Copy & Paste Formats
• Share Results via Email (Plain Text, HTML)
• Memory Keys (M+,M-,MC,MR)
• Configurable Display Precision (2 to 15 digits)
• User Interface Sounds (Configurable: on/off)
• Retina graphics (Optimized for all devices)

Basic Mode:
• High-Precision Floating Point (2-15 digits display precision)
• Selectable Display Formats (Standard, Scientific, Engineering)
• Basic Math Functions (+, -, ×, ÷)
• Percent Key/Mode (Single value or Expression-based)
• Parentheses Keys (Expression Grouping/Nesting—iPad Only)

Scientific Mode:
• High-Precision Floating Point (2-15 digits display precision)
• Selectable Display Formats (Standard, Scientific, Engineering)
• Basic Math Functions (+, -, ×, ÷, modulo)
• Percent Key/Mode (Single value or Expression-based)
• Parentheses Keys (Expression Grouping/Nesting)
• Trigonometric Functions (Normal, Inverse, and Hyperbolic)
• Selectable Trig. Mode (Degrees, Radians)
• Exponent Functions (2^x, 10^x, x^y, x², x³ e^x)
• Root Functions (√, ³√, x√y)
• Logarithmic Functions (Log2, Log10, Ln)
• Other Functions (random, Exponent, Factorial, 1/x)
• Numerical Constants (π, e)

Programmer Mode:
• 64 bit Integer Values
• Radix Modes & Conversion (Binary, Decimal, Hexadecimal, Octal)
• Integer Math Functions (+, -, ×, ÷, MOD)
• Bitwise Operators (AND, OR, NOR, XOR)
• Bit Shift and Rotate (Single & Multiple bit)
• Signed Number Operations (1’s & 2's Complement)
• Byte-Flip, Word-Flip
• Bit Count
• Random Integer
• Parentheses Keys (Expression Grouping/Nesting)
• Full-time Binary View (iPad Only)
• Encoding Views (ASCII, Unicode, RGB)
• Multiple Copy Formats (Binary, Hex, Decimal, ASCII, Unicode, RGB value)
• Multiple Paste Formats (Decimal, Hex, Octal, and Binary values)

What’s New

Version 1.3.1

• Updated for iOS 13
• Fixes crash during startup on iOS 13
• Minor bug fixes and improvements

This is a minor release to correct a critical bug that causes the app to crash when launching it on iOS 13. Thanks for all the feedback and bug reports during the iOS 13 Beta test. Please let us know if you encounter any problems using the app. Enjoy!

Ratings and Reviews

4.8 out of 5
1.5K Ratings

1.5K Ratings


Finally a free, yet functional calc ad-free

I’m baffled as to why Apple doesn’t include a simple calculator for iPads. While there are tons of free calculator apps out there, they are all riddled with annoying ads. I know that apps aren’t supposed to be free and some on has to pay through ads or money. These guys are awesome enough to offer the app 100% free without ads. Not only that but the interface is beautiful and there are multiple modes for the calculator. While this calculator does not include units conversion modes like others, at least it’s free and it’s functionality is what I need it for. Thanks guys! Super stoked!

Sting_18125 ,

Glad there no ads

To me ads are a big time block for getting calculations done in a pinch. I get that ads do help with supporting apps but most have a “monthly fee” like I rather buy a calculator at a store than pay a monthly fee. So I am relieved to see one that doesn’t make you pay monthly and doesn’t force ads on you. I am sure there are hiccups in the app here and there but I hope that the ads don’t pop up in future that would make it really to point to just buy one physically in store.

But all good stuff for my uses keep up nice work

Selloursouls ,

Amazing Calc app, dev deserves a thanks!!

I found this calculator app while doing subnetting for my networking class and it has been an absolutely incredible help! The options and presentation of this app are something I expect from a paid app. The fact this app is free and functions like it does shows the developer is proud of his work and wants people to have a good app without hassle. This app is worth paying for, but I love a great app that is very nice to my wallet. It is easy to use and works flawlessly for me.


Jerry Montgomery
73.4 MB

Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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