Wireframe iOS design apps for iPad?
I've adored Briefs app since running across it a few years back. Nothing comes close to the power and design of this app. It for a long time was probably too powerful (sadly) to ever ship on the iTunes store - but the app has finally launched on the Mac and iOS App stores.


http://giveabrief.com


The trial Mac version is free as is the iOS app, Briefscase, which run the briefs. Heavy users of the app will want to buy the actual app on the Mac App Store.