What do you want in a calculator? Clean, easy-to-use interface. All the features you need, but not cluttered with extras you don?t use. An opportunity to catch mistakes and correct them. That?s what you get with twoCalc. Even better, your calculations are stored on an internal "tape" that you can access at any time. With twoCalc you get all the features you need: large easy-to-use buttons, audible and vibrate feedback, 10 number memory, simple unit conversions, a few common scientific functions, adjustable font size and user-selectable colors. For programmers, twoCalc offers hex and binary modes and two?s complement negative numbers. Try twoCalcFree for free, or buy twoCalc and avoid the ads, get more color choices, and use the hardware keyboard for input. ++++ v1.2.00 adds commas, exponentiation, and some performance improvements

twoCalcFree screenshots: