@GossiTheDog "Similar with official mobile apps, there's no privacy agreements etc in the app stores as there's no third party tracking."
What? I thought the reason they try to coerce you into using mobile apps is precisely because they (and Google, the NSA, etc) can track you, without needing cookies and thereby side-stepping the law. Don't they all insist on Google Play Services (a binary black box) so that your information can be shared between apps?