iOS: Camera+ on the iPad isn't nearly as necessary as its iPhone counterpart, but improvements to the app today might change that. Namely, aside from a much needed interface update, the app is now a seriously improved editing tool. The update here finally ditches the ancient skeuomorphic design in favour of a look that's similar to the iPhone app. Beyond that, the editing in Camera+ is dramatically improved with by the new ability to edit with your finger (or Apple Pencil). Now, you can use any of the Lab's various features to edit portions of a photo instead of the entire thing, which makes it a lot more useful. This alone makes the app a much better tool for photo editing than it was before, so if you shrugged off the initial launch version, it's worth another look.
Camera+ ($7.99) [iTunes App Store]