This Appli is a scientific calculator formula input type. Calculated to press the [=] button to enter the formula, and the result is displayed. If you enter the wrong formula, you can view and modify again. In addition to the keyboard for a scientific calculator, this app has been equipped with a large button keyboard for arithmetic. You can switch the flick. You can change the size of characters depending on the application. There is also a paid version of Calsma Plus. Calsma Plus is equipped with a programming function. You can store frequently used constants again. Since the function keys that can be registered with the formula, in Calsma Plus, at the touch of a button you can start the program that you create.