Oojao Image Editor is a powerful and free photo editor designed for Android. It supports cool effects, multiple projects/tabs and layers. This app is ad-supported to keep it free, but ads are not annoying and can be quickly closed or temporarily turned off in Settings. And there are no ads while editing! You can do all the usual canvas or free layer manipulation such as resize, crop, drawing, erase, draw shapes, bucket fill, select, copy, paste, delete, move, align, rotate, flip and more. Ad