Description3d Rubik's Cube puzzle emulator supporting 2x2x2 through 10x10x10 sized cubes.
Tablet friendly interface looks good on all screen sizes.
Two finger drag to rotate view and one finger drag to move puzzle pieces.
Purple button toggles view mode (rotate entire thing) and move mode (move the puzzle pieces).
Beyond that, it's easy to figure out the application. The puzzle, however, is famously challenging.