---
title: "launchApp(completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterapplicationlauncher/launchapp(completion:)"
---

# launchApp(completion:)

## Declaration

```swift
func launchApp(completion: @escaping @Sendable (MTRApplicationLauncherClusterLauncherResponseParams?, (any Error)?) -> Void)
```

```swift
func launchApp() async throws -> MTRApplicationLauncherClusterLauncherResponseParams
```