https://www.cnet.com/news/facebook-shuts-down-ios-research-app-it-used-to-access-user-data/ > Apple confirmed that the app violated its policies. > "We designed our Enterprise Developer Program solely for the internal distribution of apps within an organization," Apple said in an emailed statement. "Facebook has been using their membership to distribute a data-collecting app to consumers, which is a clear breach of their agreement with Apple."