I've been using Chartboost and Admob as my main source of revenue for about two years now.
Chartboost, for the last 4 months have completely disappointed and I am making peanuts now. Admob is still good for me.
I heard Martin talk about StartApp a few weeks ago (or months?) and I decided to implemented in one of my next apps. I was impressed how cool their dashboard is and the amount of interesting features they have (SplashAds!). Their NativeAds I was also very happy about it. I managed to do some really cool stuff with this next app.
My games are mostly puzzle and education, so I think that's why Chartboost is not performing well.
So, anyone has any experience to share about StartApp?