Are you looking for FREE Photo Editor?

There are a few FREE photo editor available for Android. You might try a few below. Reads the apps description on Google Play.

These are apps that I like and it's FREE..

1. Photowonder 
2. Snapseed
3. Camera MX
4. Instagram
5. PicsArt
6. Adobe Photoshop Express

These apps good enough for me and might be good for you :)