I have published two games and one application in Google Play, I am mainly using Admob and I have also tried Charboost and leadbolt.
The results are very bad, both Chartboost and Leadbolt has been practically 0.
Admob is the only one that generates some money but the payments per click are ridiculous (lower than any ads ads in a web)
I would like to know the experience of other developers, and some advice on what is best to use and not to try to get the maximum benefit of the games created.
Thank you all.