A free program for Android, by Extra Extra Mobile.

Play our fun brain teaser memory game with jewels on 3×3, 4×4, 5×5, and 6×6 boards, and challenge your memory! Our game is based on the famous board game called “Memory” and has been created for people of all ages. You will not be able to solve the puzzles if you do not memorize the patterns in the tiles. The more tiles you memorize, the more you will be able to solve the puzzles. Our game is based on the idea that brain training should be fun. You will not be forced to solve the puzzles in order to get to the next level. The game is based on the idea that if you are playing with a friend, you can compete with each other and see who can memorize the most tiles.