Review Scraper API - Reviews from 50+ sites in JSON
Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.
Fondoodler - Hot glue gun for cheese, by BuzzFeed 🧀
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.
Wispberry - Review your everyday
appfigures - Cross-platform app store analytics for all of your mobile apps.