There are so many photo editing apps available, but some are more robust than others. These are the ones that I find myself coming back to over and over again.

Snapseed This app has so many features it’s hard to believe that it is free. There are 29 tools and filters including healing, brush, HDG, and perspective. It’s easy to crop, tune, and edit your images so that they look like they were taken by a professional

Polarr Photo editing app with advanced auto-enhance tools and filters to meet all of your photo editing needs.

Adobe Photoshop Express Includes over 5 dozen free tools that allow you to make basic to advanced edits. Once you are finished editing you can share your creation directly on your favorite social networks.

PIP Camera-Photo Editor This is a fun app that allows you to get creative with your pictures. The filters allow you to turn average pictures into masterpieces! Choose from over 200 frames and more than 20 filters to create the perfect image.

Pixlr Use this editor to create collages, layer multiple photos, stylize your images and much more.

PicMonkey This app lets you make basic edits of your photos as well as draw on top of them. You can add stickers to your photos to create a customized, unique masterpiece.

Applications for Education
Instead of using pictures they find on the web for presentations, students could use their cell phones to take their own pictures. They could use one or more of these apps to edit their pictures, giving them more of a feeling of ownership of the content they are creating.