[hoppelhase]

> They probably took it down because as the original app it violated the App Store’s guidelines on data collection.

Or maybe Apple took it down because - as you said - it violated the store guidelines. Or Apple just encouraged them to do it by themselves (for a better PR). So effectively, they were forced.

[floatingatoll]

It wasn’t in the App Store. It was sideloaded from a Facebook website using a profile signed by Facebook’s enterprise developer certificate. Screenshots in various news articles confirm this.

[richardwhiuk]

It violated the Enterprise Developer Certificate Terms, so Apple have revoked the Developer certificate.

The rules state that Enterprise apps must only be in the hands of users who are under the supervision of the company which operates the Enteprise certificate. It's likely that Apple doesn't consider the people Facebook have co-opted into this program to qualify

[Krasnol]

According to the single information there, Apple DID NOT take it down the last time already which means it was still collecting data before Facebook removed it.

There is absolutely no information about this time. Actually according to the content it is again Facebook and not Apple who removes the app.