CloudOn

Ever been annoyed when you can't open your Microsoft Office files on your iPad? Me too. Luckily, there's CloudOn, a free app that does enough Office-y stuff to make one question how something this cool could actually be free.

As an added bonus, CloudOn works very smoothly with the new iOS 7 interface. Where other apps display only a minimal portion of your formatting and style options, CloudOn honestly does an admirable and convincing job of displaying all the fonts, formatting, and anything else you've applied to what you see on the iPad or iPhone screen. Check it out. It'll cost you nothing.