Further evidence that this drawing thing is obsessive. Sketches drawn on the iPhone in the app Inkling.
It’s a slim little program. Not exactly fully featured – no layers, no loading old images, no zoom, no color even! But the brush stroke simulator is well done, and the ‘paper grain’ texture (meant to be Sumi-e) gives it a neat charcoal look. It’s kind of ideal for expressive little doodles. You won’t get carried away over-rendering things.