This simple game helps kids as young as 4 deal with such tricky math concepts as telling time and counting money, while making a game of it. Kids can build their own custom rockets and launch themselves into a sky filled with math concepts. To catch more airtime, for example, they have to tap all of the even or odd numbers. The game plays with geometry, square roots, counting and other math concepts. 99 cents, for iOS devices.
— Hayley Tsukayama