For all the cheap-ass sys admins:
I wouldn’t pay 100$ a year to apple just to have push notifications when my server fucks up or an user fill my support form but I want to know that in real time but I have iPhone(forget about FCM).

So I downloaded pushbullet to my phone and integrated its API in my server and when something important happen I get completely free notification which (thanks to url schemes in ios) redirect me to my server administration app.

Note: I used xamarin for my management app to be ready for the moment when I switch back to android.