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By Tim O's Studios, LLC

This app is only available on the App Store for iOS devices.


This calculator has a perfect design that maximizes the size of the buttons and display, with a great layout for fast and easy calculations.

Retina Display.

Download now and see how truly great this basic calculator is.

What's New in Version 4.0

We hope you enjoy our calculator app! If you like the simple design please help support us by rating the app 5 stars.

-Updated Icon
-Added support for iPhone 6 and 6 Plus resolutions
-Added support for Apple Watch
-Added support for iPad Split View


iPhone Screenshot 1
iPhone Screenshot 2
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
iPhone Screenshot 1
iPhone Screenshot 2

Customer Reviews

Almost a 5 but they screwed up one key

Very nice basic calculator for getting down to everyday calculations. Simple, east to read, some visual tactile feel (i.e. Depth, separation) HOWEVER there is a retarded +/- toggle key up top where in its place should be a % key. Like they even alude to by using this very same % symbol in the listing title. Annoying. Yeh I know I can just move it over a couple of decimals. But I like they convenience of the percentage key to automatically move the decimal over 2 places so I don't have to go through mental gymnastics.
How often does one need a +/- toggle key ? For what ?
Switch that +/- toggle to a % key and this would be a ***** 5 star basic calculator.
App developer, how 'bout an update fixing that ?
It really is a beautifully simple designed very useable instrument for the most part.

Finally, a Great Calculator

I bought a couple other calculators -- the screen were crowded with functions I just don't ever need and, to make things worse, the advertisements were constant and sometimes wouldn't allow the calculator to function until the "ad time" elapsed. This one is pure-T perfect. Sure, if you're a scientist of an engineer, you might need one of the other ones, but I'm not and having unused functions on the screen is a waste of space. This one is great across the board.

Simple and competent

Has everything I need. Percentages, square roots, basic math. I had one with trig functions, which was overkill. Trig was the only class I ever failed in high school, so cosines and tangents are not useful for me. And so far it hasn't shown any ads. (I don't mind an ad placed discreetly, but the first two iPad calculators I tried had banner ads at the bottom with lights moving around the borders – very very distracting. I also wouldn't mind paying for simple calculator app like this to keep it ad free

View in iTunes
This app is designed for both iPhone and iPad
Offers Apple Watch App for iPhone
  • Free
  • Category: Utilities
  • Updated:
  • Version: 4.0
  • Size: 16.8 MB
  • Apple Watch: Yes
  • Languages: English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Vietnamese
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

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