I am looking for a quick and easy push notification service for my Ionic iOS/Android app. I tried Ionic push, but it is not working.
There is a well-known service called Google Cloud Messaging. The platform can help you with your projects, and you can embed it into the applications you develop.
There is a page where you can see exactly how the platform can be integrated with your apps and services: https://developers.google.com/cloud-messaging/