Nope. You can do push with XMPP just like everything else. The problem is that Apple demands open source client maintainers also personally maintain infrastructure with high availability to handle the push notifications rather than allowing them to delegate that to service operators where it belongs.

Apple is aggressively hostile to open source is the problem. IMO their behavior is why we don't have any nice open source chat apps like we did before the iPhone became popular.

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tharant 5 days ago | parent [-]

I can find no such requirement in the App Store Guidelines. Or is there anecdotal evidence somewhere?

	▲	msgodel 5 days ago \| parent [-]
		They require push notifications to be signed with your certificate. You must maintain the infrastructure to do this yourself because you can't share the certificate with third parties (obviously) and downtime will mean no push notification delivery. I have no idea if that's in the guidelines but that's how it works.