You know what's tracking you more than websites? Apps! You know why sites want you to install an app and keep begging you to install one? Because all the protections a browser adds to make it hard to track disappear once you're in an app. They require you to login, then they share all your data with anyone and everyone.
My app doesn't do that. The reason I push the app is because we don't ask for your email address, so the only way I have to notify you of new messages or stuff is via an app. Apps are sticky, websites aren't.