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.
Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.
AppFollow - AppFollow is an integrated solution that makes monitoring, analyzing, and elevating your app's reputation easy.
42matters - 42matters offers top-notch app market data and audience data that helps you to build your business around mobile. All mobile data is easily accessible via our REST API and easy to use Explorer.
appfigures - Cross-platform app store analytics for all of your mobile apps.
Mobile Action - Mobile Data Intelligence & Actionable Insights.