Is It Safe to Use a Period Tracker After Roe v. Wade?

DEFINITION

Dobbs v. Jackson Women's Health Organization

The 2022 Supreme Court decision that overturned Roe v. Wade, holding that there is no federal constitutional right to abortion. The decision returned abortion regulation to individual states, creating a patchwork of laws ranging from near-total bans to constitutional protections.

DEFINITION

Subpoena

A legal order compelling a person or organization to produce documents or data. App companies that receive valid subpoenas from prosecutors are generally required to comply and turn over user data they hold. Apps that store no data on company servers cannot comply with a subpoena for data they do not have.

DEFINITION

On-device storage

A data architecture in which user information is stored exclusively on the user's physical device — phone or tablet — and never transmitted to company servers. Apps using on-device storage cannot be compelled by subpoena to provide user data because they possess none.

Why Roe v. Wade Changed the Risk Calculus

Before the Supreme Court’s 2022 Dobbs decision, period tracker privacy was primarily a consumer data protection issue: advertising, data brokers, and app revenue models. After Dobbs, it became a legal safety issue.

When abortion is criminalized at the state level, evidence of a pregnancy, its beginning or its end, can become relevant to a criminal investigation. Period trackers record exactly this kind of information. Apps that hold this data on their servers can be subpoenaed.

Most period tracker users in restrictive states will never face prosecution. The risk is structural: where data is stored determines whether it can be obtained, and that exposure exists regardless of how likely any individual prosecution is.

The Two Categories of Apps

Cloud-based apps (Flo, Clue, Natural Cycles, Glow, Ovia, Stardust) store cycle data on company servers. When you log a period, a pregnancy, or a missed cycle, that information travels to a server the company controls. A prosecutor with a valid court order can require the company to produce that data.

Flo’s Anonymous Mode attempts to decouple cycle data from user identity, but the data still reaches Flo’s servers. The decoupling is a policy layer sitting on top of the same server-side architecture.

On-device apps (Floriva, Euki, Drip on Android) store cycle data exclusively on your phone. Nothing is transmitted to company servers. A subpoena to the app company produces nothing, because the company holds nothing.

A subpoena compels a company to produce data it holds. On-device storage means there is no data to compel.

What State You Live in Matters

The legal risk is not uniform. California’s AB 1242 prohibits California-based companies from complying with out-of-state abortion subpoenas. States like Colorado and Washington have passed reproductive health data protection laws.

Texas, Alabama, Georgia, Mississippi, and Idaho have near-total abortion bans and weak or absent data privacy laws, making them the highest-risk environments for cloud-based tracker users.

For state-specific breakdowns, see our state privacy pages.

Practical Steps

1. Switch to an app with on-device-only storage.
2. Delete your account from any cloud-based tracker you currently use. Uninstalling the app leaves server-side data intact.
3. Check whether your new app requires an account for basic tracking. If it does, your data is linked to your identity on their servers.
4. Avoid apps that require location access if you travel to access care.