PocketDOF is intended for photographers.
It allows you to calculate precise information regarding the hyperfocal distance and the area of sharpness.
It also features the unique ReverseDOF, which calculates the focal distance and min. aperture, given a focal lens and sharpness area.
The reverse DOF calcuator is a calculator you won't find in any other DOF application.
NOT FREE: 2€ via paypal