A free program for Android, by Varsity Tutors LLC.

Geometry Prep: Practice Tests, Flashcards is an app that can help students learn geometry, especially those who find it difficult to grasp the concept of an angle or plane. It offers them a variety of tests to help them better understand and memorize the concept.

The tests consist of multiple-choice questions that can be solved in one of two ways: you can choose to solve them yourself by entering the correct answer or you can use the built-in time function to find out the correct answer after a certain amount of time.

If you are looking for a way to help your students better understand geometry, Geometry Prep is the app for you.