Firebase is from Google for building app infrastructure, improving app quality, and growing your business. This guide shows you the basic way to configure Firebase on both Android and iOS. Then you can use your Firebase for these features:
Table of contents:
Enable Firebase on the builder and follow the guide below to configure Firebase:

Step 1: Create Project in https://console.firebase.google.com
Step 2: Add Firebase to your iOS app:
Project setting
Your apps section