---
title: Quick Start
description: Getting started with the App package in React Native Firebase
---

# App Quick Start

## Installation

Install this module with Yarn:

```bash
yarn add @react-native-firebase/app
```

### Initializing Firebase

React Native Firebase provides two methods for initializing your with Firebase.

- Native initialization
- Client initialization

#### Native initialization

Native initialization is the preferred way of setting up React Native Firebase. This process involves adding the
`google-services.json` and `GoogleService-Info.plist` file generated via the Firebase console. The native method
is compatible with all other packages.

For further platform installation guides, view the <Anchor version group href="/android">Android</Anchor> & <Anchor version group href="/ios">iOS</Anchor> documentation.

#### Client initialization

Similar to the [Firebase Web SDK](https://www.npmjs.com/package/firebase), React Native Firebase allows app
initialization via the client using `initializeApp`.

> Due to limitation with some Firebase SDKs, the Remote Config, Crashlytics & Performance Monitoring modules will not work with this method of initialization.

For further information, view the <Anchor version group href="/client">client initialization</Anchor>
documentation.

## Module Usage

Import the default firebase instance into your project:

```js
import firebase from '@react-native-firebase/app';
```

The instance is also accessible from other installed packages, for example:

```js
import auth, { firebase } from '@react-native-firebase/auth';
```