When you select the game level but I think a programming error. Letting even a level of triggers and these later successful, the subsequent level is automatically marked as unresolved (red), even if you had solved it already, and he was already green. So of course you never get all levels of green, unless you go strictly against linear.
Suspend there little else. Perhaps it lacks a bit of variety. One could, for example, only gradually unlock certain levels or in the course of the game can introduce new geometric shapes to bring in some motivation. The background sound is harmonious, but a little repetitive and can be shut off. Regularly ask the app to rate, I felt as intrusive.
Nevertheless, overall a nice and, apart from the above-described problem when selecting the level, well-made game in which you will be different otherwise required in a creative way and as in everyday life. Who earlier, when there were games at your fingertips, always liked Tangram (elders remember) or Ubongo (the younger) has played, is right here.
Tested on a Galaxy Tab S.