In the fallout from Facebook’s Cambridge Analytica scandal, Apple has begun cracking down on apps which share user location data with third-parties. Apple has started sending out emails to developers who infringe on these guidelines, saying that “upon re-evaluation” of their apps they have been found to break App Store rules.
In particular, Apple refers to the clause in the App Store guidelines which notes that Apple can turn down apps which transmit, “user location data to third parties without explicit consent from the user and for unapproved purposes.”