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Connect to a MongoDB Realm Backend App - Kotlin SDK

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  • Access the App Client
  • Configuration

The Realm app client is the interface to the MongoDB Realm backend. It provides access to the authentication, and Realm Sync.

Pass the App ID for your Realm app, which you can find in the Realm UI.

val app = App.create(YOUR_APP_ID)

You can create multiple App instances to connect to multiple Realm apps or to the same Realm app with different configurations. All App instances that share the same App ID use the same underlying connection.

For more granular control of the details of your app connection, such as custom timeouts for connections and keys for local encryption, use the AppConfiguration.Builder to control details of your App:


For most use cases, you only need your application's App ID to connect to MongoDB Realm. The other settings demonstrated here are optional.

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