Q:

iAd & Admob Interstitial Integration on iPhone

I'm currently using Admob GADInterstitial in my iPhone app, and would like to take advantage of the interstitials offered in the iAd UIViewController additions in iOS 7.
My guess is that Apple's fill rate will not be that high, so I'd like to fall back to Admob if an ad isn't available. Unfortunately the API for iAd looks really opaque, and I don't see a way to determine if an ad is available.
Has anyone successfully done this, and if so, how?

A:

I missed that the manual presentation approach, calling requestInterstitialAdPresentation, returns a BOOL that says whether an ad will be displayed. Theoretically, I can use this to control whether to fall back to admob. I'll post a comment later on whether it worked or not.
EDIT: It works!
It turns out requestInterstitialAdPresentation does appropriately answer true or false. Then the only thing that remains to make it feel like the other APIs is to figure out when the ad VC is dismissed. I did this by responding in the viewDidAppear: method of the hosting view controller if an ad had been launched. I actually have it encapsulated in an AdManager class,and use an NSNotification to communicate the viewDidAppear:, so was able to drop in iAds pretty cleanly.

A:

You can check following library which will seamlessly integrate iAd and Google Ads.
https://github.com/larsacus/LARSAdController
I have been using it for fews months and it is cool.

