Both a HDR capable iPhone camera replacement app and an image editor capable of mimicking HDR photographs from library imports. It also contains a number of useful filters. As a camera app it captures and combines 2 versions of the same scene in an intelligent way.
My Nan has one of those old fashioned photographs of her sisters and her that have been manually recoloured and I wanted to try to simulate that on an iPhoneograhy image. Multiple masks turned this into a jigsaw.