We have an iPad and iPhone app on the appstore (two separate apps). Within the app is a PDF viwer very similar to apples iBook PDF viewer. We just want adbar added to both apps.
We also want a button in the for an in-app purchase to remove the ads.
That's all that's needed.
The ad should change between iAd and admob.. Documentation for this is plentiful: http://www.apptite.be/blog/ios/mixing-iad-and-admob/