Google has not yet announced this but there is now an official Google AdSense app in the Apple iTunes Store by Google for free. You can download the app for free over here.
Publishers have been waiting for an official Google AdSense App for years.
The app gives you an overview screen, top channels, top ad units, top sites and top url channels data in a quick and easy to read iOS interface. The app is compatible with iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation) and iPad. And also requires iOS 6.0 or later.
Here are screen shots of the app:
Top Ad Units:
Forum discussion at Google+.