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# AdAttributionKit Updates

Learn about important changes to AdAttributionKit.

## Overview

Browse notable changes in <doc://com.apple.documentation/documentation/AdAttributionKit>.

## June 2025

- Receive postbacks in multiple conversion windows and understand where an app is installed with the county-code property in postbacks.
- Control how the system attributes conversions for your app by using attribution rules and cooldown windows.

## June 2024

- Add support for re-engagement, which allows you to measure the success of ad campaigns that lead people to re-engage with apps they’ve already installed, while respecting their privacy.
- Specify a re-engagement URL: At runtime, advertisements can present a universal link registered for your app to launch to display content inside of advertised apps and begin re-engagement measurement.

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