A full version app for Android, by Multiplication Tables.

Math Games – Free Game for all is a free math game for all ages. You can play it on the go or at home. It is designed to help you practice math and improve your calculation skills. With this app, you can train your mind, have fun, and enjoy playing the game. You can play in one of the following modes:

Trivia: A collection of different trivia puzzles, where you need to solve the puzzle and answer correctly to get a higher score. 

Maths: A series of math problems that you need to solve to get a higher score.