I have numerous photo apps for my ipad. PS express, Diptic, Photogene, Filterstorm to name a few. Generally I go to Filterstorm if I want to do anythiing. It handles raw files. The new app, out just recently is by www.niksoftware.com my favorite software company for editing photos as a plug in with photoshop, is called Snapseed. And yes, editing photos is a “snap” even fun . Although the raw files no so, jpgs great. WhenI heard it was released I bought it right away even though it was $4.99 (I think that was the price). My good friend Gary Ellis (shout out!) used it and sent me a photo and was happy , photo at bottom. Nice job!
Gary by the way is a graphic artist, artist, comic novel writer on his third book, and all around great guy. He is from the Bay Area if you need his skills. www.nourbs.com