If you used the Flo app, your data may have been shared without your consent.
Join the Claim isn’t a law firm. We connect you with regulated UK firms that run group action claims. If one of our partner firms takes this case forward, we’ll share more details, including how to check your eligibility.
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Overview
Flo is one of the most popular period and fertility tracking apps in the world — used by over 100 million people to monitor their cycles, pregnancies, and intimate health. But recent legal action suggests that trust may have been broken.
Multiple class action lawsuits have been launched against Flo Health Inc., alleging the app collected and shared users’ most private health data — including menstrual cycles, pregnancy status, and sexual activity — with companies like Facebook (Meta), Google, and others, all without users’ full consent.
And if you used the Flo app, your data may have been part of it.
We are monitoring the situation closely. Register your interest and we’ll keep you updated if one of our regulated UK partner law firms is able to take this claim forward.
Flo data breach – At a glance
What do we know about the Flo data breach?
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Latest updates on the Flo data breach
August 2025
Flo settled a four-year-old claim that accused the company of sharing the personal health data of millions of US women with Meta, Google, and other third parties.
July 2025
Join the Claim opens registration to those interested in finding out more about any future UK claim.
A US jury trial is scheduled to begin.
March 2024
A Canadian class action is certified in British Columbia. If the claim succeeds, over one million people who used the app in Canada over a three-year period will be eligible to claim damages.
January 2021
Flo settles with the US Federal Trade Commission, agreeing to change its privacy practices and undergo independent audits.
February 2019
The Wall Street Journal investigation reveals that Flo shared users’ intimate health data with Facebook and others.
We’ll provide more updates on the Flo data breach as they occur.
Who could be affected by the Flo data breach?
If you use the Flo App, your data might have been shared without your consent.
Register to stay updated and we’ll let you know if a partner law firm takes this claim forward.
Frequently asked questions
Lawsuits say that Flo shared sensitive health data with Facebook, Google, and other third parties — despite telling users it would keep that data private.
Menstrual cycle details, pregnancy intentions, sexual activity, and other health-related inputs. Some claims also mention tracking location and device identifiers.
We’re keeping a close eye on this. If a UK version is filed with one of our partner law firms, we’ll notify you and help you check eligibility.
If a company processes your health data in the UK, it must follow GDPR. This includes getting clear, informed consent before sharing your data with anyone else. If that didn’t happen, UK users may be entitled to compensation.
We are not a law firm. Our role is to keep people informed about potential group actions if one of our regulated UK partner law firms is able to take this claim forward.
By registering, you’ll stay up to date with any developments — from investigations to possible legal action.
No. Registering simply means you’ll receive updates. If a law firm later takes on the case, you’ll be given the option to learn more about the process and any potential costs before deciding whether to take part.
A group action claim allows people affected by the same issue to take action together. This strength in numbers helps stand up to big organisations. Join the Claim helps connect people with law firms so these actions have a real impact.
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