Core @nativescript/firebase-core npm install @nativescript/firebase-core Usage Android Ensure google-services.json file is located in App_Resources/Android/src. iOS Ensure GoogleService-Info.plist file is located in App_Resources/iOS. Initialize Default App import { firebase } from '@nativescript/firebase-core' const defaultApp = await firebase().initializeApp() Initialize Secondary App import { firebase, FirebaseOptions } from '@nativescript/firebase-core' const config = new FirebaseOptions() const secondaryApp = await firebase().initializeApp(config, 'SECONDARY_APP') License Apache License Version 2.0 Payments: IAP & Subscriptions Admob