Flo
Flo Health, typically shortened to Flo, is a health company founded in Belarus; currently located in the United States, United Kingdom, Amsterdam, and Lithuania, but available worldwide.[1] [2] Their flagship product is an app, named Flo, designed for period-tracking and pregnancy-tracking. As of Aug. 2025, Flo boasts 68m monthly active users and 380m downloads internationally. [2]
| Basic information | |
|---|---|
| Founded | 2015 |
| Legal Structure | Private |
| Industry | Health |
| Official website | flo.health |
Consumer impact summary
Freedom
Flo, under their proprietary software license, restricts the rights to modify, resell, rent, lease, loan, sublicense, distribute, or otherwise transfer rights of the product. [3]
A user must register to use the service.[3]
Flo can change your password at any time at their discretion. [4]
Market Control
Flo is the leading menstrual health app on the market as of 2025. [5]
Flo is the fourth-highest profiting health app currently on the market, directly behind MyFitnessPal, reporting US$263m in 2024 alone. [6]
Privacy
Upon a user deactivating, abandoning, or deleting their account, Flo states it will retain some data of the user. [4]
Flo has been subject to various international lawsuits due to selling information of users without their prior consent. Data was sent to multiple third-parties.[7][8][9][10][11]
Incidents
Selling Data to Meta (2016-2025)
Since 2016, it has been alleged that Flo was sending user's private health information to Meta. Flo has denied these claims, yet an investigation led by journal Privacy International included them in a group of 36 period-tracking apps which sent data through Facebook's Facebook Software Development Kit (SDK); whether or not the user has an account with Facebook.[7][8]
FTC Files Complaint Against Flo (June 22, 2021)
According to an FTC complaint filed against Flo in 2020, the company shared private and intimate data of individuals to: Google, Meta, AppsFlyer, and Flurry, without users' consent. [9]
Class Action Lawsuit (2024)
The Supreme Court of British Columbia, Canada, certified a class action lawsuit against Flo due to the findings and allegations of selling personal data without consumer consent.[10]
Lawsuit in California (2025)
A jury in California unanimously agreed that Flo violated the privacy rights afforded to California users by the California Consumer Privacy Act (CCPA) for mishandling the data between non-consenting parties. [11]
Products
- Flo App - An app for tracking a woman's menstrual cycle; also used for tracking pregnancies.[2]
References
- ↑ Magistretti, Bérénice (2017-08-11). "Flo raises $5 million for its AI-powered period-tracking app". Venture Beat. Retrieved 2025-08-12.
{{cite news}}: CS1 maint: url-status (link) - ↑ 2.0 2.1 2.2 "About Flo". flo.health. 2025-08-13. Retrieved 2025-08-13.
{{cite web}}: CS1 maint: url-status (link) - ↑ 3.0 3.1 "Terms of use". flo.health. 2025-08-13. Retrieved 2025-08-13.
{{cite web}}: CS1 maint: url-status (link) - ↑ 4.0 4.1 "Privacy Policy". flo.health. 2024-09-06. Retrieved 2025-08-13.
{{cite web}}: CS1 maint: url-status (link) - ↑ "Menstrual Health Apps Market Size, Share & Trends Report Menstrual Health Apps Market Size, Share & Trends Analysis Report By Platform (Android, iOS), By Application (Period Cycle Tracking, Fertility & Ovulation Management, Menstrual Health Management), By Region, And Segment Forecasts, 2025 - 2030". Grand View Research. 2025-08-13.
{{cite journal}}: line feed character in|title=at position 57 (help) - ↑ Curry, David (2025-01-22). "Flo Revenue and Usage Statistics (2025)". businessofapps.com. Retrieved 2025-08-13.
{{cite web}}: CS1 maint: url-status (link) - ↑ 7.0 7.1 "No Body's Business But Mine: How Menstruation Apps Are Sharing Your Data". privacyinternational.org. 2019-09-09. Retrieved 2025-08-13.
{{cite web}}: CS1 maint: url-status (link) - ↑ 8.0 8.1 "Period tracking app says it will stop sharing health data with Facebook". mashable.com. 2019-02-22. Retrieved 2025-08-13.
{{cite web}}: CS1 maint: url-status (link) - ↑ 9.0 9.1 "Flo Health, Inc". ftc.gov. 2021-06-22. Retrieved 2025-08-13.
{{cite web}}: CS1 maint: url-status (link) - ↑ 10.0 10.1 Schmunk, Rhianna (2024-03-08). "Lawsuit claiming Flo Health app shared intimate data with Facebook greenlit as Canadian class action". CBC Canada. Retrieved 2025-08-13.
{{cite news}}: CS1 maint: url-status (link) - ↑ 11.0 11.1 "Frasco v. Flo Health, Inc. - Jury Verdict — Document #756". courtlistener.com. 2025-08-04. Retrieved 2025-08-13.
{{cite web}}: CS1 maint: url-status (link)