On October 12, 2026, London-based Flo Health announced a multi-year strategic partnership with Google Health, along with a strategic investment from Google Health in the company. Neither side disclosed the size of the investment, which The Next Web confirmed. Flo is the world's largest period and cycle tracker, with half a billion downloads and more than 80 million monthly active users. Under the deal it becomes Google Health's "featured, premiere women's health partner" inside the Google Health app.

Why It Matters

This is the largest platform-level endorsement femtech has had since Flo became Europe's first femtech unicorn in 2024 (General Atlantic). It also settles a strategic question the category has been circling for two years: who owns the continuous hormonal signal? Cycle apps own the self-reported data (bleeding, symptoms, sex and mood logs). Wearables own the physiology (temperature, HRV). Each has needed the other. Oura, Garmin (via Natural Cycles) and Apple have each built partial bridges, and we covered [Xella's Oura integration](/stories/xella-oura-wearable-lab-integration) and [Clue's move into care referrals](/stories/clue-get-care-in-app-care-marketplace) in recent weeks. Google is now putting money into the bridge with the largest installed base, and the promise of *co-branded devices* signals a push into dedicated women's-health hardware rather than just an API. For competitors, Clue (100M+ users, now pivoting to a care marketplace) and Natural Cycles (FDA-cleared, hardware-agnostic) suddenly face a rival tied into a major wearable ecosystem. For the sexual-health side of the business, the consent architecture is what to watch. Flo users log sexual activity, contraception and pregnancy intentions, which is the most sensitive data in consumer health, especially in post-Dobbs U.S. states. The per-data-type, per-purpose consent model is stronger than industry norm. Whether it holds once Google's AI health coach is drawing on it will be the test, and regulators and privacy groups (Flo already faces a [Dutch privacy complaint](/stories/flo-privacy-campaign-netherlands-complaint)) will be watching. Sceptics will also point to [The BMJ's recent warning](/stories/bmj-menstrual-tracking-apps-harm) that cycle-tracking apps promise more health benefit than the evidence supports.

The partnership has three parts. First, data sync, starting in early 2027. Users who opt in will be able to link Flo with the Google Health app. Fitbit readings (sleep, heart rate, heart-rate variability, skin temperature and respiratory rate) will feed Flo's cycle predictions and symptom insights. In the other direction, Flo's insights will appear in Google Health so that Google Health Coach can take cycle phase and life stage into account. Second, co-branded hardware. The companies say they will build "new products that are specifically designed for women," combining Flo's algorithms with Google's wearable hardware and sensors. No product names, prices or dates were given. Third, a joint research programme to build AI that understands how hormones affect sleep, heart rate, mood and energy. The goal is models that can spot early signs of perimenopause and symptom patterns linked to slow-to-diagnose conditions such as PCOS, endometriosis and fibroids. The release also says the companies will "explore how wearable signals can support Flo's work in fertility, subject to clinical validation and regulatory review."

Privacy commitments take up a large share of the announcement. No data moves between the apps without explicit permission, "given separately for each type of data and each purpose," and users can withdraw it at any time. Flo data shared with Google Health "will never be used for advertising, never be sold, and will not be made available to other apps or developers through Google's health platforms," and Flo "remains an independent company." Research is to use aggregated, pseudonymised and synthetic data. The Next Web notes why this matters for Flo: in 2021 it settled with the FTC over allegations that it shared users' health data with Facebook and Google despite privacy promises.

"Women have waited too long for technology that understands their bodies as well as it understands their steps," said Flo co-founder and CEO Dmitry Gurski. Rishi Chandra, GM of Google Health, called it "a significant investment in our commitment to women's health."

Sources

Update — 2026-10-13

Initial entry — story first created.