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

# Uninstall Tracking

Uninstall tracking allows you to measure when users remove your app from their devices, providing valuable insights into user retention and app performance.

## How does it work

* Linkrunner sends a daily API request to Firebase Cloud Messaging (FCM) and Apple Push Notification Services (APNS).
* FCM and APNS then send a silent push notification to verify if an app is still installed on a given device.
* An uninstall is recorded if the response indicates that the app was uninstalled (FCM and APNS) for 3 consecutive days.

## Setup

Refer to the following guides to enable uninstall tracking for your application:

* [Flutter](/sdk/flutter#uninstall-tracking)
* [React Native](/sdk/react-native#uninstall-tracking)
* [Capacitor](/sdk/capacitor#uninstall-tracking)
* [iOS](/sdk/ios#uninstall-tracking)
* [Android](/sdk/android#uninstall-tracking)