DragonBones!

Synfig Studio is a free and open-source 2D animation software, designed as powerful industrial-strength solution for creating film-quality animation using a vector and bitmap artwork.

Pixelsque's goal is to be as simple as possible, while still retaining many powerful features. It works like any standard pixel art editor, with a pen, eraser, and shapes. Pinch zoom and two finger drag can be used to move around the image from anywhere. Lesser-used functions such as save/open/new, and others can be found in the menu, saving valuble screen space on phones, and allowing easy access on tablets. It fully supports all Android devices from low-end phones to high-end tablets.