A friend co-founded http://www.localytics.com/ http://www.localytics.com/ who have a real-time solution in this space. It is free so worth a try though I haven'

A friend co-founded http://www.localytics.com/ http://www.localytics.com/ who have a real-time solution in this space. It is free so worth a try though I haven't tried it myself.