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.
Numito - Word and number puzzles game, similar to Countdown GameShow
Language Drops - Play with your words. Language learning simplified.
DragonBox Numbers - Teach kids about numbers with an easy and fun game
4Cards - A beautiful app to learn four great English words every day
Wikids - An encyclopedia that talks to your kids