A Multitasking Calculator for iPad & iPhone.

When you rotate your iPad, Calculator EX would change to 4 mode:

– Simple mode

– 2x mode (You can operate 2 calculators at once)

– 4x mode

– opposed mode

If you only want to use one mode, you could just need to rotate the device to select which mode you like, then lock the Rotation.

Enjoy it :D.