A free program for Android, by Wild Spike.

Welcome to the enchanted world of Smart Tiles! This addictive game will keep you entertained for hours. You need to attract your attention and skills to think ahead the time. At each level, tiles with similar numbers appear on the screen. Tap them in order to merge them into a single one but be careful not to fill the whole field with numbers. Do you want to challenge your brain and boost your focus? The game helps you to concentrate better, play mind games, and improve your search and attention skills when playing this game. Smart Tiles is a unique, intuitive, and easy-to-use application that provides you with an improved user experience.