Screenpay is a mobile media company that presents ads, deals and other media on the home screen of Android phones. These ads and deals are highly targeted based on the personal interests and lifestyle of the user, and they are perfectly located to make the most of user’s attention. Behind Screenpay is a complex custom ad network that allows for plugging and mixing many mobile ad sources. Timegen Consulting did the full stack development for Screenpay, including the native Android front end and the highly available transactional back end, on a dedicated infrastructure.