Microsoft’s Photosynth app for iOS is one of the few apps I will use on a regular basis. It’s essentially a photo-stitcher for iPhone that can create some pretty amazing panoramic photos. All you have to do is slowly move an iPhone, as directed on-screen, in a circular fashion around a scene you wish to capture. After briefly processing the series of photos, Photosynth will allow you to share the photo either on Facebook, Bing Maps, or on Photosynth’s site.
It’s not perfect, but then again, it’s free and it works. If you can get over the limited sharing options, it’s a cool, useful little app.