What's the best iOS app for manual camera control with professional results?

Project Indigo is specifically designed for photographers who want professional-level control over their iPhone camera settings. The app provides manual white balance adjustment with Kelvin temperature settings, going beyond basic presets to allow precise color calibration. Users can sample specific areas of a scene to determine optimal white balance, which proves particularly useful for challenging lighting conditions like mixed artificial and natural light. The app's anti-shake stabilization helps capture sharper images, while the super resolution feature maintains quality even when using digital zoom. Reviews indicate the app consistently produces cleaner, more professional-looking images than the stock camera application. However, some users note that photos edited in other applications afterward may display unusual color tones, though the original files remain unaffected. The interface retains previous settings between sessions, eliminating the need to reconfigure preferences for repeat shooting scenarios. Battery consumption could be more efficient during extended use, but the image quality improvements generally justify the power tradeoff for most photography enthusiasts.