Packaging for 53 app "pencil"
Pencil by FiftyThree Responsive Web Design, find more on the Responsive Design Knowledge Hub:
Collection of tutorials written by an avid iPad illustrator to help you master Paper by FiftyThree.
Mastering Paper by FiftyThree: Drawing Portraits and Faces
Pencil [Bluetooth Stylus] by FiftyThree
Mastering Paper by Back to Basics tutorial
Putting Pencil to Paper: FiftyThree debuts the best iPad stylus yet I hope the Nexus tablets get a stylus like this. It sounds amazing, but it's iOS only.