Although not exactly an iOS or Android app, we thought this one would be worth mentioning as some of these apps in the past have later shown up on iOS devices (we’re looking at you, World of Goo). The Humble Indie Bundle offers up a collection of indie games at a “Pay as much as you think is right” price, even allowing users to select where they want their money to go: Charity, Developers, etc and what percentage of your donation to which. Definitely enjoyable each time around, the Humble Indie Bundle is worth checking out.
Price: As much as you want it to be
Link: Humble Indie Bundle