There are bigger names in the photo editing world than Snapseed, like Adobe Photoshop, but Adobe's iPhone-focused Photoshop Express can't match Snapseed with features or reviewer praise. The editing suite features adjustable brightness, contrast, color, sharpening and saturation. And instead of simple filters, Snapseed supports special effects like tilt shift and adjustable texturing. Filters aren't just on or off: You can customize how strong they are. Center focus even allows you to add some post-shot depth of field.
Basics like cropping and adding borders are also included. The original photos are never overwritten, so you won't have to worry about accidentally saving a bunch of edits over a pristine photo. And with social tools for Flickr, Facebook and Twitter, you can share edited photos as easily in Snapseed as you can in most other photo apps. At $5, it's one of the most expensive apps on this list, but that's still a bargain for the best-reviewed editing app on the market.