I don't think the neutrality argument works here. Because by having this app Google and Apple are clearly siding with the Saudi government.

The neutral thing to do was not to allow this app, but to also not allow an app that for example, helps women get out of Saudi Arabia.

This app helps clearly helps the Saudi government, and the men that choose to oppress their women (not all of them do), control the Saudi women. It makes this task easier and so helping it (by giving it a place and spreading it in your app store) isn't neutral.