Please check the help system in the application. Press the white button with the black i on the main page to call the help system.
The FAQ (at the end of each product section) will be updated according to user questions.
e.g.
45+5*9
or
45.99+23.99+45+8.95
Enter '=' to start the calculation
'f' removes the last entered number or operation (if double clicked),
or can be used to directly select any inbuilt function.
For advanced features and advanced editing use the iPhone keyboard.
(It opens when you touch the formula area - below the result display)
e.g.
sin(45) + cos(60)
or
x=12; y=4; 3*x*x+4*y+8
Enter '!' to close the keyboard and start the calculation
It's possible to mix both input types.