Flo app settlement
The Flo Period & Ovulation Tracker lets users log cycle dates and symptoms—the kind of information at the centre of the class action. Flo Website

Millions of American women who used one of the world's most popular period-tracking apps can claim a share of a $59.5M (£44.5M) payout, but the deadline to do so is only days away.

The money settles a class action filed in 2021, Frasco v. Flo Health, over allegations that intimate details entered into the Flo Period & Ovulation Tracker were passed to some of the biggest names in technology without users' consent.

Google is covering most of it, at $48M (£35.9M), with Flo Health paying $8M (£6M) and mobile analytics firm Flurry $3.5M (£2.6M). All three deny any wrongdoing.

For individual claimants, the sums are modest. Lawyers for the class estimate the average payout at between $12.69 and $31.94 (£9 and £24), with those in a California subclass in line for roughly double. The final figure depends on how many valid claims are filed. Claimants do not need to provide separate proof of app use, but must submit a signed declaration confirming their eligibility.

At the heart of the case is a technical detail. According to court records in the US District Court for the Northern District of California, software code known as a software development kit, or SDK, was embedded in the Flo app and allegedly transmitted information entered by users to third-party companies. That information included answers about menstrual cycles, contraception, and whether a woman was trying to conceive or was already pregnant.

Claims must be filed by 15 October 2026 through the official settlement site, PeriodTrackerDataPrivacyLitigation.com, online or by post. A judge is due to grant final approval at a hearing on 29 October.

Who Can Claim Before the 15 October Deadline

The nationwide class covers anyone in the United States who used Flo between 1 November 2016 and 28 February 2019 and logged menstruation or pregnancy information during that window.

An estimated 10M people fall within it. A separate California subclass, for those who used the app while living in the state, qualifies for the larger share, as California's privacy laws carry heavier penalties.

Flo is widely used in Britain too, but the settlement reaches only US users, leaving its sizeable UK following with no claim to file.

Inside the Flo App Data Settlement

Flo's handling of sensitive data has drawn official scrutiny before. In 2021, the US Federal Trade Commission reached a settlement with the company over allegations that it had shared health information, including pregnancy-related information, with analytics and advertising firms such as Facebook and Google, through what the industry calls 'app events'. The order carried no fine, but it forced Flo to secure proper consent and to tell third parties to destroy the data. The company had stopped the practice in early 2019, after news reports exposed it.

The dispute has unfolded against a far tenser backdrop for reproductive data. Since the US Supreme Court overturned Roe v. Wade in 2022, privacy campaigners have warned that period-tracking records could be used to identify, or even prosecute, women seeking an abortion, turning once-mundane app data into a political flashpoint.

Why Meta Went to Trial

The $59.5M covers only the firms that chose to settle. One did not. Meta, the parent company of Facebook, refused to pay and took the case to trial.

On 1 August 2025, a San Francisco jury found that Meta had breached the California Invasion of Privacy Act by intercepting Flo users' reproductive health data without consent, through tracking tools built into the app. It was a rare jury verdict under California's long-standing eavesdropping law, and the judge later declined to overturn the verdict.

Damages against Meta have yet to be set. Class lawyers have pointed to potential statutory damages of $5,000 (£3,740) per California user. Applied mechanically to roughly 1.6M members, that would amount to about $8B (£6B), although that is not necessarily the amount Meta would ultimately have to pay. Meta is expected to appeal.

For eligible Flo users, the decision is more immediate. The claim form is free, and the deadline is 15 October 2026.