Google has finally released a Photo Sphere camera app for iPhone. Now you can shoot huge panoramas just by moving your device around you, and upload the final product to the cloud to share with friends. If you've ever used Street View in Google Maps, you'll be familiar with the kinds of shots this can produce.
Final creations can be geotagged so others can see where they were shot, and shared out to your various social networks from within the Photo Sphere app, including Google+.
Photo Spheres are a big phenomenon on Android, and it's great to have access to them on iOS now as well. Anywhere in particular you would like to shoot one of these kinds of pictures?