The great advantage of CustomCalc is that you can execute the functions that you use most in just one touch, or click. Just "long press" any button on the keyboard to define it with the function that you prefer, putting the functions that you use most in the main keyboard view, so they will always be in front.
The calculator is like a white page where you can put your preferred functions in any order, allowing you to complete redefine the keyboard layout.
Your CustomCalc may be different from others, since each user may define the buttons as preferred.
