A GEM! an absolute GEM!
This app called ‘Paper’ by a company called ‘FiftyThree’, is awesome. Not only getting your ideas down quickly, but also for making it look like you’re absolutely amazing at drawing (maybe I’m being stupidly modest here by accident, but I doubt it 😉 )
So anyway yeah, take a look at the iPad App here and feel awesome.
(I am not get any money from this at all – I’m advertising it because I love it)
Here’s some of the images that I’ve done with this App on my girlfriend’s iPad at about 1-2 mins on each drawing, if that, on the fly: