Complete the Installation and setup part. This will create the project in Firebase console and will also install the base SDK in your Android App.
Add the dependency for Firebase Realtime Database to your app-level build.gradle file:
compile 'com.google.firebase:firebase-database:9.4.0'
N...
After you have set up Firebase to your IOS Project following the documentation for setting up firebase for IOS in other firebase related documentation you can get going with firebase.
If you haven't already added the database pod to your Podfile do so now by adding pod Firebase/Database in ...