A free program for Android, by Thedvani.
This app offers the most complete and thorough study material for passing your DMV permit test. It offers an extensive list of questions, as well as the state's official DMV manuals.
All of the material is organized neatly, and you can choose to study based on the type of vehicle you want to drive: car, motorcycle, or CDL. You can also select the state you are interested in, so you will only have to prepare for the tests that apply to your state.
This app also includes some sample tests to make sure you understand what you have been studying.
