https://www.theverge.com/2019/2/7/18215805/senators-letters-research-apps-google-facebook-apple-congress

In letters sent today, three Senators criticized controversial research apps used by Facebook and Google. The letters questioned the companies on the scope of their research, and asked Apple questions about how the company polices its App Store.

Last week, TechCrunch revealed that Facebook was paying people between the ages of 13 and 25 up to $20 a month to install an invasive research app that logged phone data. Soon after, the outlet noted similar activity from Google, and in response, Apple banned the internal iOS apps used by both companies until they came into compliance with Apple’s policies.