let's say you spend 10 cents per download. what is the best way to get it back. through ad mob i could not get it back. only 5% of my spending is coming back. i don't do agressive ads. if i do would can i make my 10 cents back? from my statistics few people are really using the app a few times others never show up again. so what i say is maybe i should show more aggressive ads as much as i can. if i do that can i get my money back or what is the best way i can do it?