  Given the increasing competition in mobile app ecosystems, improving the
experience of users has become a major goal for app vendors. This article
introduces a visionary app store, called APP STORE 2.0, which exploits
crowdsourced information about apps, devices and users to increase the overall
quality of the delivered mobile apps. We sketch a blueprint architecture of the
envisioned app stores and discuss the different kinds of actionable feedbacks
that app stores can generate using crowdsourced information.
