> ## Documentation Index
> Fetch the complete documentation index at: https://docs.larksh.com/llms.txt
> Use this file to discover all available pages before exploring further.

# iOS SDK

> Use the Firebase Apple SDK with Lark

Point your Firebase Apple SDK at Lark by passing your Lark URL to `Database.database(url:)`. Everything else (observers, writes, queries) works without changes.

## Setup

Add Firebase Realtime Database via Swift Package Manager or CocoaPods:

<CodeGroup>
  ```swift Swift Package Manager theme={null}
  // In Xcode: File > Add Package Dependencies
  // Enter: https://github.com/firebase/firebase-ios-sdk
  // Select "FirebaseDatabase"
  ```

  ```ruby CocoaPods theme={null}
  pod 'Firebase/Database'
  ```
</CodeGroup>

## Connect to Lark

Pass your Lark URL when getting the database instance:

```swift theme={null}
import FirebaseDatabase

// Change this from https://PROJECT_ID.firebaseio.com
let database = Database.database(url: "https://your-lark-project-id.larkdb.net")
let ref = database.reference()
```

If your `GoogleService-Info.plist` already has the `DATABASE_URL` field, you can update it there instead and use `Database.database()` without arguments.

## Database routing

If your Firebase app stores many independent data silos under path prefixes (game rooms, workspaces, etc.), see [Database routing](/firebase/database-routing) for options on splitting them into separate Lark databases.