Another month has gone past with even more incredible iPhone photography apps being approved in the Apple App Store. We have rounded up the most successful ones of April 2011. Take a look at these… Photosynth Photosynth – Interactive Panorama Capture and Sharing Photosynth for iOS is the panorama creation and sharing app that lets you capture more of your world. Now you can capture 360° in all directions (up, down, left, and right) to create spectacular images. Using the latest in computer vision techniques, Photosynth makes it easy and fun to create and share interactive panoramas of wherever you are. Photosynth can share images and interactive panorama experiences to…