Is Clue safer than Flo

Clue is based in Germany and subject to GDPR, which provides stronger baseline protections than US law. However, Clue still stores data on servers and shares some data with research partners. GDPR compliance is a meaningful safeguard but not the same as on-device-only architecture.

Does deleting the app delete my data

Deleting the app removes it from your device but does not automatically delete data stored on the company's servers. You need to submit a separate deletion request through the app's account settings or via email to the company's privacy team before uninstalling.

What was the Premom FTC enforcement action about

In 2023, the FTC took enforcement action against Premom, an ovulation tracking app, for sharing sensitive health data with two Chinese analytics firms, Umeng and Jiguang, without user consent. The case established that sharing reproductive health data with third-party analytics providers without disclosure is an unfair and deceptive practice under FTC Section 5.

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How Period Tracker Apps Collect and Use Your Data

Period tracker apps collect far more than cycle dates. What data is collected, how it is used, and what FTC actions against Flo and Premom revealed.

What Period Tracker Apps Actually Collect The visible data is only part of the picture. When you log a period date, a mood, or a symptom, the app records that entry. It also typically records when you opened the app, what you tapped, how long you spent on each screen, and device identifiers that link this session to your broader digital profile. This behavioral layer, not just the health data itself, is what makes period tracking data valuable to advertisers. Combined with external data from brokers, a detailed profile of a user's reproductive health, lifestyle, and purchasing behavior can be assembled from what looks like a simple cycle log. The FTC Enforcement Record Two enforcement actions define the legal landscape: Flo Health (2021) The FTC found that Flo shared health data, including menstrual and pregnancy information, with Facebook and Google for advertising purposes, despite its privacy policy stating it would not. The FTC entered a consent order requiring Flo to obtain user consent before sharing health data. A $59.5M class action settlement followed in September 2025. Premom (2023) The FTC found that Premom shared sensitive reproductive health data with two analytics fir