Not really all that surprising, but it’s not to see that it’s being actively investigated. I also highly recommend Lockdown on iOS. I tried to use an archive for this article but all the services returned “access denied” prompts.

Among the apps Lockdown investigated, tapping the don’t track button made no difference at all to the total number of third-party trackers the apps reached out to. And the number of times the apps attempted to send out data to these companies declined just 13 percent.