Sum Fun - A fun number puzzle game for iPhone and iPad.
Wikids - An encyclopedia that talks to your kids
NumberDrop - A uniquely challenging math puzzle game.
Numito - Word and number puzzles game, similar to Countdown GameShow
Griddition - Griddition is a challenging numbers puzzle where you must fill a grid with numbers, Sudoku-style.
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.