Using ads - recommendations?

I’ve seen lots of information around the web about using ads in games. I have a small game ready to go that I plan to sell for free, but I would like to generate some revenue using ads…so I ask fellow developers, what kind of experiences have you had using ads? What ad services/kits have you used and recommend? Since i’m using Unity, I plan to sell it for iOS and Android devices - are there ad services/kits that support both?

The most profitable for us were Heyzap, Playhaven and Revmob on iOS, in that order. On Android it is HeyZap and Tapjoy far far ahead of everyone else. Those all have free Unity SDK’s. Video ads also tend to pay better and HeyZap has new video ads.

There’s things like Airpush on Android but that’s going to get you tons of bad reviews with their push notification ads.

Having said that, I don’t advise relying purely on ad income. I would build some in app purchases into your game as long as you can make them something desirable. Unless you have many millions of downloads you may only make up to a few thousand dollars off ads.

Thanks for the info! I’ll check those out.