With the 11th of July the App Store is now one year up and running. After one year they report 1,5 bn downloads, 65.000 apps and 100.000 developers. (see press release) To me the ratio of apps and developers is very interesting as most of the developers pusblishing in the store have more than one app. This means, that only a little part of the developers are active at the moment. With an average of 2 apps per developer it is around 30.000 with a app/developer ratio of 3 it is 20.000. Maybe these are all new developers which are about to release their first app, but the question remains, what are these developers doing if not publishing apps? any idea?