2.2: Fixed a bug which was preventing the digits from displaying for some languages. 2.1: Updated to target Android SDK 35. 1.8: Improvements to RPN mode. 1.7: Added a Reverse Polish Notation (RPN) mode which can be selected on the settings page. 1.6: Allow entry of numbers starting with a leading decimal point. 1.5: Correctly handle the decimal and group separators used in different locales. 1.4: Make function buttons smaller than number buttons. 1.3: Make buttons look more 3D. Bug fixes.