A free app for iPhone, by Microsoft Corporation.
Photosynth is an innovative app for iOS devices that captures, composes, and shares 360° images of the world. With Photosynth, you can easily capture your favorite moments and create unique, memorable images, all with one click!
Create a panorama
Photosynth makes it easy to capture panoramas of the places, people, and events that are important to you. Just tap the photo you want to capture, choose the type of panorama you want to create (up, down, left, right, circular, or polygonal), and tap the place you want to capture.
Compose a panorama
Photosynth lets you create a panorama from left to right, up and down, left and right, circular, or polygonal. The app will automatically capture the photos you choose and combine them into a single panorama image. You can then share it as an interactive experience on Photosynth, Facebook, Twitter, or in email (using the free Photosynth service) or as a simple image.