• After more than 15 years covering everything Apple, it’s with a heavy heart we announce that we will no longer be publishing new content on iMore and the iMore forums will be closing as of November 1st, 2024.

iMore

Dear iMore community,

In the light of the Facebook scandal i looked in the ad preferences tab on their website.

I am confused about the fact that somehow Facebook knows what apps I have installed on my iPhone and iPad.

In the "Your interests" settings page on Facebook it shows that I have installed Brilliant app, Duolingo and Coursera.

I do not have Facebook or Facebook messenger installed on any devices. I never logged into those apps with my Facebook user account. I am using email for any logins in the apps. I never liked any pages related to those apps.

How in the hell can Facebook determine that I have those apps installed?

Thanks, Paul