autodeskSketchbook Mobile is the iPhone version of Autodesk’s Sketchbook Pro digital painting application. The original release hit #1 on Apple’s entertainment app download list.

The video below shows off the new 1.1 version of Sketchbook Mobile. The app’s gesture-controlled brushes have been significantly advanced, pushing the edge of what you can do with your fingers on an iPhone. Why the video producer parked this feature 1:43 into the clip instead of opening with it, I don’t know.

When you’re done editing on your iPhone, you can now email your work as a Photoshop PSD format file, preserving the separate layers of your work rather than reducing the multiple layers of Photoshop content in a drawing into one flat image.

With the App Store closing in on 100,000 apps, this one stands out as a reminder that Autodesk, formerly one of the hippest bring-your-dog-to-work tech companies on the planet, still leads in its field.