It isn't really a great secret that some of the most popular apps for the iPhone, iPod touch and iPad live within the Photography section on the App Store. Browsing through that particular category always manages to bring up multiple appealing apps with new offerings landing on Apple's servers on a daily basis. Apple has put a lot of effort into creating the iPhone, it has a beautiful Retina display and a great camera, something which developers have recognized by producing functioning apps that make use of the photographs taken with the device.