Do you have anything to back up your claim? I think the opposite is true: Nearly every app bundles an ad-serving or analytics library which uses fingerprinting

Do you have anything to back up your claim? I think the opposite is true: Nearly every app bundles an ad-serving or analytics library which uses fingerprinting techniques like this. Apps require login in addition to fingerprinting, not instead of it. Analytics libraries are extremely easy to include. Some even get included without the knowledge of the developer. For example, when a Flutter app includes the Firebase library, it starts automatically sending user behavior data to Google. Specifically, it sends the title of every screen the user opens and how long they spend on it. This happens even on Flutter apps for iOS.