CleverTap - CleverTap offers blazing fast analytics, powerful real-time segmentation, multi-channel messaging, A/B testing and personalization in one unified solution.

Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.

Apple App Analytics - Apple's very own iTunes Connect App Analytics

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.

Proof.ink - Proven immutable data stored on the Steem blockchain

appfigures - Cross-platform app store analytics for all of your mobile apps.