The app is simple & intuitive to use. The labels are attractive, and the app "navigates" much like the iPhone itself. ALL those points make it distinct from its competitors. I recommend it highly. Cons: ones last label appears on the NEXT photo one selects. Very irritating, as the iPhone has a simple copy/paste function. There is no explanation that one should label in Camera Roll, rather than in any other photo albums . There is no explanation that labeling creates a duplicate photo.