With the 3GS, the iPhone's camera hardware got much better. So why didn't its camera software? That's what Snapture is for.
The best jailbreak camera app went legit in the App Store a few months ago, but it was missing a few things-specifically, tap-to-focus on the iPhone 3GS, the lack of which made it feel like a compromise, not a categorical improvement. Well, that's fixed now, and along with new camera filters, social network support, and the app's standard burst shooting, visible camera roll, full-resolution capture and full-screen tap-to-shoot makes Snapture's $2 seem much more reasonable.