Overly simple, but maybe thats part of the magic. Dont expect many controls. Just add your photos and the app does the rest. High key and low key backgrounds work best. It CAN get difficult selecting which image you want to drag around.
For what it is, this app is sweet, I havent come across anything like it. I have an iPhone 4s, and about 120 apps installed. Check it out, its by far the coolest and maybe only way to create a collage.
GieTM about PhotoTangler Collage Maker