Slider bars allow users to manually adjust important parameters such as brightness, contrast, saturation, sharpness and hue — just as you would on many digital cameras and with image-editing software.
Cameleon saves images to a dedicated folder within the device's camera roll at full resolution. Multiple copies of the same image, including the original, can be saved and viewed in the folder.

A relatively new photo app, Cameleon, has just been updated with faster performance — most notably when saving images, bug fixes and integration with Instagram. At its core, Cameleon is a camera app with multiple manual options including brightness, contrast, saturation, sharpness and hue adjustments. In addition to touch-based focus and exposure control, the app offers six user-definable presets as well as a live preview so you can see the effects before committing to them.

The app provides non-destructive editing and the ability to undo any effects (or save a separate copy of an image, for side-by-side comparison). Images can be shared to Facebook, Twitter and now Instagram. The app also saves images to a separate folder within the camera roll, where the photos are downloaded at full resolution.

Available for iPads and iPod touch devices with a camera, the app is compatible with iPhone 4 and 5, although, unfortunately, not with 4S.  All devices require iOS 6.0+. The app sells for $2.99 and can be downloaded here.