Apsto
http://www.apsto.com/App store for feature phones
Our product is a app management and delivery platform. We offer carriers white label app store. App store provider for Blackberry, Windows Mobile, J2ME, Symbian mobile devices. ericsson.com/article/estore_20100204125530 adweek.com/socialtimes/facebook-for-every-phone/265385
Angel list: https://angel.co/company/apsto-1
Member count: 11-50