That's why I mentioned them!! Here're my posts again.I meant bad in the scope of admod earning. most of their earnings is from in-app purchases I guess.
Anyway, I don't really believe in ad revenue.
The big money comes from in-app purchases.
Then I added the following examples of non-ad-supported games.
Game of War:
$1,173,694 - DAILY REVENUE ESTIMATE
https://thinkgaming.com/app-sales-data/3352/game-of-war-fire-age/
Mobile Strike:
$254,770 - DAILY REVENUE ESTIMATE
https://thinkgaming.com/app-sales-data/58402/mobile-strike/
Clash of Clans:
$1,504,678 - DAILY REVENUE ESTIMATE
https://thinkgaming.com/app-sales-data/1/clash-of-clans/
Meaning that, in my point-of-view, a good in-app purchase system is more valuable to the developer, than going with an ad-supported business model.