We actually just released the app yesterday. We don't really have a formal plan, just this sort of stuff, like posting to HN, game and android related subreddits, twitter, etc. Right now we only offer ads (and very few actually) since the goal is to attract users. In terms of revenue, our plan is to get some metrics and user feedback, figure out how users use the app, what they like, don't like, etc, and use that to add some relevant in-app purchasable items.