read the first part here
5. Photo Grid – Collage Maker
PicsArt is one of the most widely used picture editing apps for android. PicsArt contains lots of exciting image editing capabilities and with this tool, you can perform almost any image editing task. PicsArt is not only an image editing tool; it also allows you to make collages. This tool is absolutely free.
7. Aviary Photo Editor
Aviary Photo Editor app for android has been developed by Aviary Inc and it has all what it takes to edit, enhance and modify any image. Aviary Photo Editor allows user to simultaneously perform variety of image editing tasks including brightness, contrast and saturation. You can also append frames, make memes for social networking sites and draw variety of graphics with this app.