By any measure developers of mobile computing applications are having a tough time making a living. For the most part they have to give their applications away for either free or a nominal fee. They generally wind up sharing revenue based on the amount of advertising revenue their application generates. Of course, that revenue is totally dependent on how successful the application is. To help mobile developers ensure that kind of success Scringo today launched Developer Zone, which gives mobile developers the ability to download a variety of commonly-used features to boost end user engagement for free.