Should you delete your period app?

Short answer: deleting the app is almost never the thing that helps. Removing an icon from your home screen does not remove the copy of your cycle sitting on a company’s servers. If your concern is that data existing, then the action that matters is deleting the account — and then moving somewhere that never makes a copy in the first place.

Deleting and replacing with nothing also has a cost that gets glossed over: you lose the history that makes any of this useful, and cycle history is not something you can reconstruct from memory.

Why deleting the app does so little

It helps to separate three different things that all get called “my data.”

• The app on your phone. Deleting removes this. Straightforward.
• The copy on the company’s servers. Deleting the app does nothing to this. It persists under the company’s retention policy until you explicitly ask for erasure — and sometimes for a defined period after that.
• Copies already shared with third parties. Analytics vendors, advertising partners, data brokers. Deleting your account does not reliably claw these back. This is the one you cannot undo, which is the real argument for caring before you install rather than after.

So “should I delete my period app?” is usually the wrong question. The useful one is: who has a copy, and how do I get it erased?

The sequence that actually works

1. Export your history first. Do this before anything else — once the account is gone, so is the export. Most apps have this in settings; on iPhone, writing to Apple Health is the most portable option.
2. Request account and data deletion inside the app. Not just logout, not just uninstall. Look for “delete account” in privacy or account settings. Our per-app deletion guide walks through where this is buried for the major trackers.
3. If there is no in-app option, email the privacy contact named in the privacy policy and ask for erasure explicitly. Under GDPR and UK GDPR, and under several US state privacy laws, you have a right to request this and they must respond within a set window. Washington’s My Health My Data Act specifically covers consumer health data of this kind.
4. Get confirmation, in writing. An unanswered request is not a deletion.
5. Then delete the app. Now it means something.
6. Move to a tracker that keeps no server copy, so you are not repeating this in a year.

Where to move

The only structural fix is a tracker that never holds your cycle on someone else’s computer. Per our Period Tracker Privacy Index, two apps declare “Data Not Collected” outright on their App Store privacy label:

• Euki — no account, stores locally, and the only period app Mozilla named to its “Best Of” category.
• drip — free, open source, no account, stores locally. The source code is publicly auditable, which is a stronger form of proof than a policy.

Dew, which I make, sits just behind them: no account and no server copy of your cycle, but it declares an anonymous, opt-out usage counter, so it does not reach “Data Not Collected.” I would rather put that in writing here than let you discover it after switching. If the strictest possible answer is what you want, use Euki or drip.

More detail on the trade-offs in private alternatives to Flo and how to switch without losing your history.

A word against panic-deleting

In 2022 a lot of people deleted their trackers in a week, kept nothing, and quietly stopped tracking altogether. That is a real loss. Cycle history is genuinely useful — for noticing changes, for making sense of symptoms, for having something concrete to show a doctor rather than trying to recall six months from memory.

The goal is not to have less information about your own body. It is for that information to be somewhere no one else can reach. Those are different things, and the second one is achievable without giving up the first.

Sources

• Washington State Attorney General — My Health My Data Act guidance
• Mozilla Foundation — *Privacy Not Included, reproductive health app reviews
• Apple App Store privacy labels for all 14 apps, read 23 August 2026 — see the Privacy Index
• US Federal Trade Commission — public case record, In the Matter of Flo Health (2021)