Adapty - Low-code price personalization for in-app subscriptions
Reviews for iOS - Keep track of your App Store reviews
Apple App Analytics - Apple's very own iTunes Connect App Analytics
Review Scraper API - Reviews from 50+ sites in JSON
CleverTap - CleverTap offers blazing fast analytics, powerful real-time segmentation, multi-channel messaging, A/B testing and personalization in one unified solution.
Product Reviews - Concise and unbiased software product reviews