https://www.theverge.com/facebook/2019/1/30/18203349/facebook-research-app-apple-shutdown > Facebook will end a controversial market research program that violated Apple developer guidelines in order to harvest user data from the phones of volunteers. The company said early Wednesday evening that the Facebook Research app, which offers volunteers between the ages of 13 and 35 monthly $20 gift cards in exchange for near-total access to the data on their phones, would no longer be available on iOS. It will apparently continue to be available for Android users. > TechCrunch reported on Tuesday that the company has been paying the gift cards to people aged 13 to 35 in exchange for installing an app called Facebook Research on iOS and Android. The app monitors their phone and web activity and sends it back to Facebook for market research purposes.