Photoshop Fix for Android also offers tools to tweak more general characteristics like focus, color and paint as well as the ability to adjust exposure, saturation, contrast and more. When you get back to your desktop machine, Adobe's CreativeSync tech takes the work you've started on mobile and packages it in a layered PSD file so you can easily continue the task. Of course, you'll need a Creative Cloud subscription to employ that workflow.
If you aren't paying for Adobe's suite of creative apps, you can still use Photoshop Fix on an Android device, but you won't have access to the handy sync features that allow the company's mobile and desktop offerings to work together. If you're looking to give it a go, Photoshop Fix is available for free at Google Play.