Catch22 7Calc (Supercalc) is described as '7Calc is an programmer's expression calculator. It is the spiritual successor to the original 'supercalc'. 7Calc is designed as a Windows 7 Desktop Gadget, and is written in Javascript/HTML' and is a Calculator in the education & reference category. There are more than 25 alternatives to Catch22 7Calc (Supercalc) for a variety of platforms, including Android, Windows, Mac, Android Tablet and Linux apps. The best Catch22 7Calc (Supercalc) alternative is Wolfram Alpha, which is free. Other great apps like Catch22 7Calc (Supercalc) are SpeedCrunch, Numbat, Google Calculator and Windows Calculator.