I've downloaded an app called FxCamera for my Android. I don't own an iPhone because who needs an iPhone? I sure don't. Though, I guess they have better apps? I dunno. Hipstamatic isn't available for Android because I don't know why. Anyway, FxCamera is pretty cool, I like it better than Retro Camera. It has a better interface and takes better photos. Like the above.
It's not perfect. I'd like to be able to turn of the fake ass Polaroid white border. A zoom feature would be nice, as would the ability to use the frontside camera. Are you listening, FxCamera guys? Or girls? Could be girls! (Girl Power!)