Authenpic - A disposable camera on your phone. No retakes.
Camera Noir - The most powerful black & white photo editor
Gudak Cam - Disposable film camera in your iPhone
Camera-M - A powerful manual camera for your iPhone
Freeprints Photobooks - Freeprints Photobooks is one of the best mobile application that helps you to create beautiful photo books right on your mobile devices and tablets.
Manual Camera for iPhone - Custom exposure for your iPhone camera