One of the biggest differences I made to the growth of my app business was teaching myself the basics of xCode, how to upload an app to Apple and how to intergrate Revmob and Chartboost into my apps. Being able to build, update, publish and add ads to my apps saved me a lot of money and time, in comparison to paying developers to these small jobs for me. It’s actually much faster as well.
Revmob and Chartboost are among the highest paying ad networks you can add to your apps. I’ve found them much better (higher eCPMs) than other alternatives like iAds, Admob, etc and use them in my own apps. Here’s a quick overview of what I do.