[KaiserPro]

> The data may be in Apples iCloud but is 'private'

But how do we measure that?

Apple went into differential privacy a while ago, which really isn't about privacy, its about anonymisation. Which is not the same thing. Private means that no one else but you[1] can see your stuff

Anonymous means that people can see your stuff, but they don't know who you are. This is different.

[1] well mostly only you