What's New

- Add % operation
- Add more than 10 smart and colourful themes !!!
- Decrease time to launch the app

App Description

Sum-o is a calculator, a clever beautiful calculator. Its interface has been hand crafted to enhance your experience using the full capabilities of the latest iOS. Sum-o is versatile; it reacts to on-screen gestures and device motion.

Our favourite feature is the background which constantly and dynamically changes depending on your calculation. Warm colours indicate a positive answer while colder colours are displayed as negative. Right-handed? Left-handed? no problem - personalise the interface to your preference! Simple, practical and smart; go ahead and experience calculus differently with Sum-o.

NEW in version 2.0:
- introducing the percent operation
- quicker to launch
- more than 10 smart colourful themes to choose from!!!

NEW in version 1.3: smarter than ever by constantly displaying the history of your current calculation!

NEW in version 1.2: Sum-o on your iPad!!!

NEW in version 1.1: swipe horizontally to show your calculations history!!!

iPhone Screenshots

(click to enlarge)

Sum-o screenshot 1 Sum-o screenshot 2 Sum-o screenshot 3 Sum-o screenshot 4 Sum-o screenshot 5

iPad Screenshots

(click to enlarge)

Sum-o screenshot 6 Sum-o screenshot 7 Sum-o screenshot 8 Sum-o screenshot 9 Sum-o screenshot 10

App Changes

  • June 11, 2014 Initial release
  • July 26, 2014 New version 2.0.0
  • August 11, 2015 Price increase: FREE! -> $2.99

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