https://www.bbc.com/news/technology-47053656
TechCrunch said participants - including those aged 13-17 - had been paid up to $20 (£15.30) a month to open up their phones to deep analysis.
In addition, TechCrunch reported that users were asked to provide screenshots of their Amazon orders.
It has not, however, suspended a parallel effort on Android.
The research focused on users aged 13-35, and those under 18 were asked to get signed parental consent, Facebook said.
However, when the BBC identified itself as a 14-year-old boy during its test, it was able to download the app without any parental consent being sought. A page did state, however, that users should be over the age of 18.
TechCrunch’s detailed report explained Facebook had previously conducted market research using an app called Onavo, which it acquired in 2013.
Internal documents, published online in December, revealed Facebook had used the data gathered to decide to takeover WhatsApp and track usage of rivals including Snapchat and Twitter's former video service Vine.
Submitted January 30, 2019 at 05:32AM by COMPUTER1313 http://bit.ly/2FXU7kk