https://finance.yahoo.com/news/facebook-removes-data-security-app-002600285.html

Earlier this month, Apple officials informed Facebook that the app violated new rules outlined in June designed to limit data collection by app developers, the person familiar with the situation said. Apple informed Facebook that Onavo also violated a part of its developer agreement that prevents apps from using data in ways that go beyond what is directly relevant to the app or to provide advertising, the person added.

The two sides discussed the issue in meetings last week, at least one of which took place at Apple’s headquarters. On Thursday, Apple officials suggested that Facebook voluntarily take down the Onavo app and Facebook agreed, said the person, who described the discussions as cordial.