Photo Booth, the application for snapping distorted and stylized shots using your Mac's web cam, was improbably but undeniably a lot of fun. Camera Sutra brings that same real-time zaniness to your iPhone 4's front facing camera.
The app takes advantage of one of iOS4's multitudinous new APIs for live image previewing, giving you a chance to see how you and your friends' faces look stretched, twirled, dented, infrareded out, and more—there are 13 effects in total—and then snap a picture of it to your camera roll.
The interface well-designed and the app works beautifully with the iPhone 4's front-facing camera, though it supports the 3G's rear camera, too. If you even occasionally are inclined to silliness, it's well worth $2. [iTunes]