https://www.theverge.com/2019/1/30/18204350/google-screenwise-app-ios-apple-violation

Google just disabled a private iOS app that monitored users’ iPhone usage, after it was revealed today that the app violated Apple’s distribution policies in the same way that Facebook’s usage-tracking Research app did.

Called Screenwise Meter, the iOS and Android app gave users who opted into Google’s Opinion Rewards program gift cards in exchange for tracking their internet usage data. The iOS version of the app relied on Apple’s enterprise program, which allows for the distribution of apps with special privileges to be used only by a company’s employees. The app has now been disabled on iOS, though it’s still available on Google’s Play Store.