Localytics - App analytics and marketing for iPhone, iPad, Android, HTML5, Blackberry and Windows apps.
Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.
Liftoff.io - eCommerce & web to print platform
App Annie - App Annie is a marketing analytics tool available for apps of all kinds. With App Annie, you can track sales, traffic, and a variety of other factors pertinent to monitoring an app's trajectory.
Widdit - Widdit provides tools that help app developers create an interactive online experience for users on both PC and mobile ecosystems.
appfigures - Cross-platform app store analytics for all of your mobile apps.