2. Best Professional Camera App: ProCamera
If you ever are in need of DSLR-like controls, this is the app for you. This is a powerful camera app that gives you a simple and clean user interface, ISO and shutter speed adjustments, histogram which is visible on-screen to help you with exposure, LowLight and HDR modes, option to shoot in RAW, TIFF, and HEIF formats and much more. ProCamera is available on the App Store for $8.99.