The Grand Tangram app for iPhone and iPad

Improve your perception and intellectual performance with The Grand Tangram. Ideal for both children and adults.
Tangram is a game that is used to introduce concepts of plane geometry, and to promote the development of psychomotor and intellectual abilities. It consists of forming figures with only seven pieces, without overlapping them, in a given time.
The 7 pieces, called "Tans", are two large triangles, one medium and two small, a square and a rhomboid.
Complete all the figures in the shortest time possible and have fun improving your cognitive abilities.