> For the complete documentation index, see [llms.txt](https://aatkit.gitbook.io/aatkit-flutter-integration/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aatkit.gitbook.io/aatkit-flutter-integration/start/app-tracking-transparency.md).

# App Tracking Transparency

Starting with iOS 14.5 publishers have to use the [App Tracking Transparency](https://developer.apple.com/documentation/apptrackingtransparency?language=objc) framework when accessing the IDFA. This is why you should present the app-tracking authorization request to the end user.