Today's platforms are held responsible for the behavior of their apps, and data abuse that may occur as a result of their own guidelines around these apps.
For example, Facebook CEO Mark Zuckerberg was drawn to the US Senate on the Cambridge Analytica scandal, where data from 87 million Facebook users was unsuitable using Facebook apps.
The new policy will be necessary for all apps and app updates in the App Store, as well as the TestFlight test platform as of October 3, Apple says.
It is not clear that if Apple itself will review all privacy policies itself as part of this change, to be able to reject apps with questionable data usage policies or user protection. If so, App Store review times may increase, unless the company has employed more employees.
Apple has already considered apps it finds dubious, like Facebook's data-intensive VPN app Onavo, as it kicked out of the App Store earlier this month. The app had lived for years, and its App Store text showed that the data collected was shared with Facebook. The fact that Apple just started it now indicates that it will take a tougher attitude toward programs designed to gather user data as one of their primary features in the future.