Did Flo Health sell period tracking data?

The FTC found that Flo shared sensitive user health data with Facebook and Google despite promising privacy. The FTC took enforcement action against Flo in 2021. A combined $59.5M class action settlement was reached in September 2025 (Reuters 2025-09-25).

Is there a free period tracker that doesn't sell data?

Yes. Euki is free, on-device, and built by a nonprofit with no commercial data incentive. Drip is also free and open source for Android users. The Clue free tier has no ads and no documented data-selling history.

What is the best period tracker for privacy in the US after Dobbs?

On-device trackers are the most legally protective after Dobbs because they generate no server-side records that can be subpoenaed. Floriva and Euki both use on-device storage. Law enforcement in states with abortion bans has sought health app data in investigations, which makes this a concrete concern.

Does Natural Cycles share data with third parties?

Natural Cycles has no documented FTC enforcement actions or confirmed data-selling. The company's FDA clearance for contraception imposes regulatory accountability, but that clearance covers efficacy, not data handling. Natural Cycles is server-based, so data exists on their servers.

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Best Period Tracker Apps That Don't Sell Your Data (2026)

Five period tracker apps with no documented history of selling reproductive health data. Ranked by privacy architecture, not just policy promises.

Why "No Data Selling" Needs Architecture, Not Just Policy Most period tracker apps claim not to sell your data. Flo made the same claim. Then the FTC found they shared user health data with Facebook and Google SDKs. The gap between what apps promise and what they actually do is documented and consequential. The most meaningful difference is architectural. Apps that store data on device cannot sell what they do not have. Apps that store data on servers can share that data, and in some cases have, regardless of their stated policies. For reproductive health data specifically, the post Dobbs legal environment adds another dimension. Law enforcement in states with abortion bans has sought health app records in investigations. On device storage eliminates that exposure because there are no server side records to hand over. How We Ranked These Apps Rankings prioritize architecture over policy promises. On device storage ranks above server based apps regardless of the server based app's stated policy. Within the on device category, we ranked by feature breadth, platform availability, and whether the developer has a documented commercial incentive to monetize data. Flo, Premom, and Spot On