Is it safe to track my period with an AI assistant?
Updated
Whether AI period tracking is safe for you depends on who runs the assistant, where your entries go and whether you can delete them, and a privacy promise on a product's own page is not proof of any of that. The Dutch data protection authority warned on 4 August 2026 (https://autoriteitpersoonsgegevens.nl/actueel/ap-privacyrisicos-door-gebruik-menstruatie-apps) that cycle data is special-category data, that it is often unclear where period apps send it, and that people should check what they consent to before they share it.
The public record shows why that check matters: in 2021 the US Federal Trade Commission said the Flo app had shared health data with marketing and analytics firms after promising to keep it private, and in 2023 the FTC charged the maker of the Premom fertility app with passing health data to Google and AppsFlyer. Mozilla's review of six period apps, published on 16 July 2026, found data going to analytics companies and recommends Euki, which keeps data on the phone.
Five questions work for any tracker, whether an app or an AI assistant. Who runs it? Do your entries stay on your phone or go to a server, and how are they protected there? Which outside companies receive them, such as analytics firms or model providers? Can you export and delete everything? Is health data used for advertising? For Portal One, Portal AI runs the service, and the cycle log sits on Portal's server: each entry is stored in Portal's database encrypted with AES-256-GCM under a key used only for cycle logs, so a copy of the database shows that an account has entries and when they were written, but no date, symptom or word.
What you write in the chat, and the entries Portal reads to answer you, go to the model providers that write the replies, and the service is not end-to-end encrypted (https://portal.ai/trust). Once your Portal has opened your cycle log, your message text is kept out of product analytics; in Telegram your first message on the subject can reach it before that. The Privacy Policy says Portal does not sell personal information or share it for cross-context behavioral advertising. In the chat you can export the log, remove one entry or erase it all, and deleting your account erases it too. An app that keeps entries only on your phone sends nothing to a server; that difference is yours to weigh.
Dated proof
- https://autoriteitpersoonsgegevens.nl/actueel/ap-privacyrisicos-door-gebruik-menstruatie-apps
Statement of 4 August 2026 by the Dutch data protection authority. Cycle data is special-category personal data that apps may in principle not collect unless, for example, the person has given explicit consent; it is often unclear whether apps share it with advertisers, so people should check what they consent to.
- https://www.ftc.gov/news-events/news/press-releases/2021/06/ftc-finalizes-order-flo-health-fertility-tracking-app-shared-sensitive-health-data-facebook-google
Press release of 22 June 2021. The FTC says Flo shared users' health data with marketing and analytics firms, Facebook and Google among them, after promising to keep it private; the final order requires consent before sharing health data and an independent privacy review.
- https://www.ftc.gov/news-events/news/press-releases/2023/05/ovulation-tracking-app-premom-will-be-barred-sharing-health-data-advertising-under-proposed-ftc
Press release of 17 May 2023. The FTC says the maker of the Premom fertility app disclosed health data to AppsFlyer and Google and shared data with two firms based in China; the proposed order bars sharing health data for advertising and requires consent for other sharing.
- https://www.mozillafoundation.org/en/nothing-personal/period-ovulation-trackers/
Published 16 July 2026. Mozilla tested six period and ovulation apps, found data sharing with analytics companies and one app that withdrew a claim about its protection, and recommends Euki because Euki keeps data on the phone.
- https://portal.ai/trust
Read on 9 November 2026. Conversations are stored on Portal servers and passed to the model providers that write the replies, the service as a whole is not end-to-end encrypted, and what is stored can be seen, exported or deleted from the account page, except the cycle log, which is exported or erased in the chat.
Questions on this page
Is AI period tracking safe?
That depends on who runs the assistant, where your entries go and whether you can delete them. The Dutch data protection authority advises checking what you consent to before sharing cycle data, because it is often unclear where period apps send it.
Can a general chat assistant track my period?
A general chat assistant can note the dates you type, but whether those dates are kept between chats depends on its memory settings, and the dates are processed on its company's servers. Ask the same five questions of that product before you rely on it.
Does Portal One use end-to-end encryption?
No. The trust page (https://portal.ai/trust) says the service as a whole is not end-to-end encrypted, and messages are passed to the model providers that write the replies. The cycle log itself is stored in Portal's database encrypted with AES-256-GCM under a key used only for cycle logs. Your Portal's workspace holds no log entry; it holds only a reminder date if you accept a reminder, and, if you report a wrong forecast, a note of what kind of mistake it was, without any health detail.
Can I delete what I told Portal about my cycle?
Yes, in the chat: ask Portal to remove one entry or to erase the whole cycle log. Portal confirms once and then deletes every entry at once, and deleting your account erases the log too. The log is not on the account page, there is no automatic expiry, and database backups keep an encrypted copy until their retention ends. Portal is told never to copy entries into its memory notes; a fact from conversation can still be remembered, and you can remove it on the Memory page.
Can anyone at Portal read my cycle log?
Nobody reads it through the product: there is no partner sharing and no group view, and the tracker works only in your private chat. The log is encrypted in the database, and a person with access to both the database and the cycle log key could read it.
What did regulators find about period apps?
The US Federal Trade Commission said in 2021 that Flo shared health data with marketing and analytics firms after promising not to, and in 2023 charged the maker of Premom with passing health data to Google and AppsFlyer. Both orders require consent before health data is shared.
The button opens @portal_open_bot in Telegram: a free 3-day trial, then a subscription.
Open in Telegram