---
title: "ExperimentalVelocityTrackerApi"
description: ""
type: "class"
---

<div class='type'>Class</div>


<a id='references'></a>

<div class='sourceset sourceset-common'>Common</div>


> **Requires Opt-in** This an opt-in flag to test the Velocity Tracker strategy algorithm used for calculating gesture velocities in Compose.

```kotlin
annotation class ExperimentalVelocityTrackerApi
```