What is App Studio?
App Studio is a publishing platform which converts periodicals you create in layout software (like QuarkXPress or InDesign), or your XML content, into a branded tablet application. Make an App Studio account and how to Get Started
You can choose to publish your application on a variety of devices - currently iPad, Kindle Fire, and Android with HTML5 tablet browsers coming soon.
QuarkXPress Starter Guide InDesign Starter Guide HTML5 Starter Guide