Scribble Buddies

It contains no ads and gives you these features for free:

• Draw and chat with others
• See where others are on a drawing
• Create an unlimited amount of public or private drawings
• No internet? Create an offline drawing and copy the scribbles when you're back online
• Scribble on 5 layers
• Powerfully edit your scribbles with the selection tool
• Make color palettes and set default palettes for drawings
• Rotate the canvas with a three-finger gesture or by spinning the compass

I am constantly working on this app, so expect this list to expand!