I use Snapseed on Android. It's a practical app with many photo editing tools
I like how I can edit my photos here,
F-Stop Media Gallery - Image and video organizer.
VSCO - VSCO® is an art and technology company empowering people everywhere to create, discover, and connect. CompanyVSCO® is a trendsetting art and technology company that .
A Photo Manager - Manage local photos on Android: gallery, geotag with photomap, tags, find, sort, view, copy...
PicsArt - Explore 100,000,000+ awesome images and photos on the web
LeafPic - LeafPic is a fluid, material-designed alternative gallery.
Pixelmator - Pixelmator is an image-editing application for Mac and iPad.