Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.
ChatWhale - Gamify your customer communication and loyalty rewards
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.
Open Loyalty for Startups - Open source stack for building customer focused products
appfigures - Cross-platform app store analytics for all of your mobile apps.
Reviews for iOS - Keep track of your App Store reviews