LVL CAM
Take perfectly balanced photos with this camera app.
Tilt your iDevice to position the white circle in the center of the frame while also keeping the line level. The interface will turn green when you have everything perfectly balanced. You can then capture a photo manually or have LVL CAM automatically do it for you. The app also includes separate focus and exposure controls, a grid option, and a ghosting option for lining up several of the same shots.