We have talked about the photo enhancement Universal app SnapSeed before. The free photo tuning app offers the features of the higher end photo editing apps with a nice finger interface. Import a image, choose what you want to do to the image, move your finger up/down to choose which tool to use, then a left/right swipe to adjust the amount of the effect to apply. A particularly nice feature SnapSeed provides is pinpoint tuning. For example, lighten just a single spot of an image rather than applying a full image filter.
Google updated SnapSeed with a group of new Retro full image filters too. As well, a share via Google+ option.
Well thought out finger actions mean SnapSeed is fast and easy to use, no ‘brushes’ required!