The GPL in particular is fundamentally not compatible with the App Store re distribution clauses. VLC for iOS being the precedent setting example from a few ye

The GPL in particular is fundamentally not compatible with the App Store re distribution clauses. VLC for iOS being the precedent setting example from a few years back. To answer your question directly, I'm not sure of cases where Apple will outright reject the initial submission of some OSS app - especially if you aren't totally up front about it. But clearly re VLC they will pull it once it is brought up (also leaving to distributing developer open to liability depending on how unhappy the contributors are)