This calculator provides a two-line edit field where the user first may tap in the formula for better input control. The result is displayed seperately & is ready to use in further calculations. The app has also a y-memory function, some constants and conversion shortcuts as well as a history-manager for older results. Since version 1.0.3 users may also send a history entry to others via e-mail or sms. They also have access to a web-resource with a collection of useful formulas and conversions.