Thanks for sharing ! I'm getting started on Android app development, and those are very encouraging numbers (and thanks for sharing your app link to have an idea of what you're building).
I think I'll try my hand at some games targeted for the local audience first (I live in Uruguay, South America, I have some ideas which can be tested for the larger Argentinean and Brazilian markets) and see how it goes :) .
My goal is to make U$ 400/month in recurring revenue by year's end.