---
title: callStackTree
framework: metrickit
role: symbol
role_heading: Instance Property
path: metrickit/mxapplaunchdiagnostic/callstacktree
---

# callStackTree

The call stack tree associated with the app launch.

## Declaration

```swift
var callStackTree: MXCallStackTree { get }
```

## See Also

### Reading app launch metrics

- [launchDuration](metrickit/mxapplaunchdiagnostic/launchduration.md)