@stefan Worth at least pointing out that if you use an iPhone/iPad/Apple Watch with the built in cycle tracking, the data is encrypted in such a way that even Apple can't read it.
Not a lawyer so I can't say what the story is around law enforcement demanding the data from you. But they'd have to get it from you as nobody else can see it, and presumably an encrypted store is safer than a paper record in this regard.
More details here: apple.com/legal/privacy/data/eā¦
https://bookstodon.com/@gwcoffey/113482506525654955
https://www.apple.com/legal/privacy/data/en/health-app/
@gwcoffey Very useful, thank you for sharing!
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