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Period tracking app refuses to disclose data to American authorities
(www.newsweek.com)
This is a most excellent place for technology news and articles.
The main service my period tracker provides is a notification telling me "hey, it's PMS time. If you're emo it's ok, it's probably just hormones and not the real end of the world. You're also likely to hyperfixate on something. Pull out your knitting a fixate on that, instead of risking fixating on something someone said off-handedly a decade ago that now makes you cry".
(The message is user-configurable. Mine doesn't say that verbatum, but that's the gist.)