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.
A Multitasking this app for iPad & iPhone. When you rotate your iPad, this app 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.
By aman shojaei
Good app