Not what I was expecting

I got this app to compile a bunch of frames already saved to my camera roll from another source. The description implies it does this but it doesnt seem to. Pretty limited IMHO - Ive deleted it within ten minutes of purchasing it. Shame the App Store doesnt have a try before you but option.

exray about iLapse - Time Lapse Video and Multiple Exposure Blender, v1.2.3