A free program for Android, by uWaver Ltd.
Doodle Digits is the most addictive and entertaining way to keep your brain sharp. It is a puzzle game where you must match and cross pairs of digits that are the same or equal to 10 when added. It is very easy to play, and you will have fun while doing it.
How to play:
You can play it on your mobile device. You just need to tap the screen to make a move, and you must find a solution in as few moves as possible.
The game is divided into six levels, each with a different difficulty. In each level, you must find a solution to a puzzle.