I downloaded the Hipstamatic App from Itunes for the IPhone 4 and,... I am in love with it! Despite its horribly corny name, which makes you feel like a Williamsburg poser, it has a lot of cool features and endless possibilities for compositions. I have just begun to play around with it, so expect many Hipstamatic photos in the coming weeks. For $1.99, this is the best toy I've bought in a long time.