Admob allows publishers to monetize app with targeted ads from the pool of advertisers
AdPumb is a programmatic ad mediation platform that allows you to fully manage the inventory with a waterfall bidding method.
AdPumb, on the other hand, takes a portion of any additional revenue generated for the app developers.
Admob takes 40% of revenue and gives publishers 60% of the revenue generated.
Instant payout from AdPumb