I've been wishing for an Android app from Google AdSense and Google Adwords since day one. Without paying big bucks there is really nothing out there for use with Google Adwords. There are a handful of Android Apps for Google AdSense, including DroidSense which I've reviewed in the past.
In my experience none of the current options fully deliver. Either they leave out types of AdSense content such as feeds, search, video, etc or they just plum aren't accurate or reliable.
I'm grateful to say that although there is still no fully reliable app available in the Android Market, Google has launched AdSense Mobile Beta.
About the AdSense Mobile Interface
What you should know about the mobile interface:
You can quickly check earnings, run basic reports, and see most alerts, which you can then address through the classic interface if necessary.
While the mobile version of AdSense works best with Android, iPhone and iPad, you can still access both the mobile version and the classic interface on other mobile devices.
For now,you can't perform certain actions from the mobile interface, such as running custom reports or blocking ads. Google is working on making more functionality available.
To switch to the full desktop version of the interface from your mobile device, click view in Classic at the bottom of the screen.
Learn more over at the AdSense blog.