How can i get more from admob, startapp and other in one app.

Monetizing, Advertising & Marketing Advertising Networks
1

I am using AdMob and startapp in my app. In some countries, the AdMob ads pay more and in some places, startapp revenue is more. Is there any platform where I can integrate the AdMob and startapp unit Ids which gives more revenue the particular ad networks ad will get shows to users.