Polarr is a new image editing app for iPhone and iPad. Working in landscape orientation, Polarr has a bunch of great features including the ability to create and save your own presets and filters.
As well as standard photo edit functions like exposure, contrast, highlights, shadows etc, this app offers finer photographic adjustments via curves, HSL and toning. There is also a unlimited history/undo rollback funtionality which is very useful.
Visit polarr.co to find out more.