Hi, my name is Oscar Leañez, im a game developer and CTO of Frontino Interactive, I have a lot of experience in the development and monetization of applications for android / ios . mainly using google services offered ( ADMOB ) , besides other services like it ADBUDDIZ , ADBRAIN, etc. To this day I posted about ten applications for android and ios markets , all with the system monetizing ADMOB . For that and other reasons I think I am the person you are looking for your project
I hope we can talk more about what you need and want .
Best regards.