A superb app for sketching, drawing, note taking, flowcharting, etc. I just bought this AM and can't stop using it. tabularasalabs.com
"....then he downloaded Color Identifier, an app which uses the iPhone's camera and then speaks the color. And a world opened up to him..... more...
I've talked up these guys before. Hilarious stuff--groups of people (improvers) act in concert in public to the (sometimes) shock of an unsuspecting public.