Ionic Push solution

Hi everyone,

I am trying to extend my app with a push service.
Looking through the web I found several ionic examples, yet have not been able to wrap my head around it.

Here’s my goal:

My server should send a push notification about every 3 hours to each individual user to update them on their individual parameters.

Hence, I need a server solution that targets the package to each individual.
On the client side I thought of using

I already obtained apple push certificates but am not sure how to use them…
Any help is welcome!