Brushes, an app for the iPhone and iPad, is quickly becoming a favorite of artists, with more than a quarter million downloads.
The app was even used to draw a New Yorker cover in May 2009. The artist, Portuguese illustrator Jorge Colombo told the magazine that he really likes the Undo feature. “It looks like I draw everything with supernatural assurance and very fast," he said, "it gets rid of all the hesitations.”
A companion app called Brushes Video, captures the drawing as it is created. See for yourself: