The interface seemed strange at first, but once you get familiar with it becomes quite simple and fast. It allows powerful editing with minimal work and works well on a small touchscreen. Snapseed is a solid photo editor by any standard, and a great one by iPhone standards.
Because of how the app is organized and how the edit process works, the app is easy to use and- dare I say it- even fun. Snapseed is a $5 app from Nik Software that allows you to do some rather advanced editing from your iPhone. Another way to interpret it is that any photo editor for iPhone must think outside the box in order to provide powerful editing capabilities that are pleasant to use. One way to interpret this limitation is that any photo editor for iPhone must be very simple and basic. Attempts to make something like Photoshop or Pixelmator for iOS all fail terribly, simply because you can’t put that many features onto a tiny touchscreen and end up with an app that’s pleasant to use. Making a photo editor for iPhone is a tricky thing.