[semilshah]

Cool, there are also some iOS apps explicitly for "app discovery," but I still think it's impossible to break out. I read somewhere that 4% of app downloads account for about 3/4 of all app revenues.

[vanelsas]

Zwapp is one of those app discovery apps. And it is a platform for developers wanting to promote their apps to passionate app users. See : http://itunes.apple.com/app/id426360184?mt=8&ls=1