Apple App Analytics - Apple's very own iTunes Connect App Analytics
Qonversion - The subscription data platform for mobile-first companies
AppMetrica by Yandex - Free ad tracking & full-stack app analytics for mobile apps.
Apple Subscriptions - Subscription offerings now available to App Store developers
Appfigures for Android - App analytics & insights for mobile publishers
CleverTap - CleverTap offers blazing fast analytics, powerful real-time segmentation, multi-channel messaging, A/B testing and personalization in one unified solution.