Compatible with iOS 5,6,7,8 and 9
For iOS 5+ and devices with auto-focus-camera.
Does autofocus annoy you? Sometimes it need to be disabled, so this tweak is the choice. You are allowed to switch autofocus modes (System default, Just hide the squared crop, and Disable entire autofocus system) by double tapping with 2 fingers on the camera preview view. More info in settings.
Configure from Settings.