I've seen a fair collection of collage apps for iOS and CollegeIt is a nice free app that does something few of the other apps bother with: letting you edit photos within the app itself. Most require you to finish the photos in another app and then create the collage.
This little app gives you an almost unlimited ability to tune the layout, frames, and color backgrounds. The backgrounds can be solid or a gradient.
Pictures can be moved to improve composition within a frame, and tapping a photo displays a rather complete set of editing tools for brightness, saturation, sharpness, orientation and so on. It's very nice to see this all in one app, which makes touching up images and creat
