Your iPhone is a pretty formidable camera on its own, but there are plenty of affordable ways to make it even better without attaching any additional hardware. Forbes contributor Amadou Diallo has concocted a list of the four best camera apps for the iPhone, all of which you can download for less than $10 to make your photos look better than ever. The first app Diallo chose, Camera+, is an App Store mainstay which has been around in various incarnations for years. It’s kept up with the times as well, receiving a major visual overhaul alongside the release of iOS 7 last year. With Camera+ you can independently control the focus and exposure of a shot, lock in white balance, change