There is no such thing as too many photography apps. Being an avid iPhone photography fan, I've found that every single photography app I downloaded from the App Store - and boy did I download ton of these - serves a slightly different purpose, letting me go the extra mile adding something unique to my photos.
Enter FocusTwist, a new iPhone application from Arqball which gives you ability to capture your snaps now and focus later. The software achieves refocusable photography by taking several images rapidly, each at a different focus setting.
The clever software then combines those snaps into a single image that can be posted online for your friends to interactively refocus later...