I want to get the iPhone 4 when I upgrade phones in May but my girlfriend has an android powered phone. The only thing that is holding me back from deciding 100% on the iPhone is that I would not be able to share apps with her or we wouldn't be able to play multiplayer apps together. I know that the app Angry Birds is available on the Android Market as well as on the Apple market and I am just wondering if anybody knows if there are other apps out there that are also available on both Apple's market and Android's market.