Drawy - Learn to draw, use camera to score your drawings
Artboard Studio - Online graphic design app mainly focused on product mockups.
Iceberger - Draw an iceberg and see how it will float
Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.
Stickman Builder - Free parametric graphic Stickman Builder, creates fascinating stick figures on the fly.
Snappa - The perfect graphic design tool for digital marketers.