AppGrowthLab (by SplitMetrics) - 55 app growth lessons from 30 app marketing experts
Apple App Analytics - Apple's very own iTunes Connect App Analytics
The Creative Marketer - Techniques & tools for copywriters, marketers, and creatives
Adapty - Low-code price personalization for in-app subscriptions
Pollen VC - Fuel your app's growth with early access to your revenues
RevenueCat - In-app subscriptions made easy