Last year, I reviewed Quick Math, a game that let you solve quick arithmetic tests using your handwriting on the iPhone’s screen. This year, developers Shiny Things have released Quick Math+, an expansion of the original concept that includes new game modes and avatars to unlock as you play the game.

The Quick Math series is a great example of education and fun combined on iOS, and the new game is every bit as challenging as the old one (the Memorize mode is especially tricky at Advanced, but you should try Extreme). Quick Math+ is a new (Universal) app available at $1.99 on the App Store.