Period tracking app has been yapping about your flow to Meta

Flo, a period tracking app with 75 million users, was found liable in a class action suit for selling intimate health data to Meta without proper user consent. The lawsuit involves 13 million Flo users and was decided in August 2025 in Frasco v. Flo, establishing legal precedent for privacy violations in non-HIPAA-compliant health tracking software. The case highlights how design and consent decisions by product teams enabled the monetization of sensitive reproductive health data to advertisers.