What is the best private alternative to Flo?

For maximum privacy with a modern, calm experience, an on-device tracker like Dew is the strongest alternative — your cycle never reaches a company server. Euki (built by a nonprofit) and Drip (open source) are also excellent on-device options. Apple Health is private but minimal. Clue is more private than Flo's history but still server-based. The 'best' depends on whether you want maximum privacy, open source, or a nonprofit.

Why look for a Flo alternative?

The most common reasons are Flo's 2021 FTC settlement (over allegations it shared health data it had promised to keep private — settled with no fine or admission of wrongdoing), discomfort with cycle data living on company servers, and a preference for an app with no account. Flo has improved, but some people simply prefer a tracker that holds no copy of their data at all rather than one that promises not to misuse the copy it holds.

Are private alternatives to Flo free?

Many are. Euki and Drip are free and nonprofit/open-source. Apple Health is free and built in. Dew is free during its first version, with honest pricing planned later and no ads or data sales ever. Privacy and 'free' aren't opposites — what you want to avoid is 'free because you're the product.'

Will I lose my data switching from Flo?

You can keep your history. Most of the value is in your period dates, which you can export from Flo or simply re-enter (it's faster than it sounds), and your memory of recent cycles. See our step-by-step guide to switching from Flo to a private period tracker for the clean way to migrate.

Private alternatives to Flo (that don't sell your data)

If you like what Flo does but not where your data goes, you have good options. Here are the private alternatives worth switching to — ranked by what happens to your cycle.

Short answer: the best private alternatives to Flo are on-device trackers that hold no server copy of your data — Dew, Euki, and Drip — plus Apple Health if you want maximum trust in Apple’s encryption and don’t mind a bare-bones experience. Clue is more privacy-respecting than Flo’s history, but it’s still a server-based model. Here’s how to choose.

First, why switch at all?

Flo has improved a lot — we say so plainly in is Flo safe? — but people leave for consistent reasons: the 2021 FTC settlement over allegations it shared health data it had promised to protect, discomfort with cycle data sitting on company servers, or simply wanting an app that needs no account. If any of those is you, the alternatives below all close that gap in different ways.

The private alternatives, compared

Dew — on-device, calm, no account

Our app, so weigh the bias. Dew keeps your cycle on your iPhone and, optionally, in your own end-to-end encrypted iCloud — never on a Dew server, because there isn’t one. No account, no ads, no third-party trackers. The pitch versus Flo: a polished, modern experience without your data ever leaving the Apple ecosystem. iPhone only.

Euki — nonprofit, on-device, no account

Built by Ibis Reproductive Health, a nonprofit, Euki stores everything on your device, uses no third-party trackers, and even offers a privacy passcode. It has no commercial incentive to monetise your data. Trade-off: it deliberately doesn’t do period prediction, which some users miss. Available on iOS and Android.

Drip — open source, on-device

Created in the Mozilla orbit and fully open source, Drip stores data locally and is auditable by anyone — the gold standard for “don’t trust us, read the code.” It’s function-first rather than polished. Available on iOS and Android.

Apple Health — private, but minimal

Genuinely private (on-device, end-to-end encrypted iCloud, not monetised), but closer to a vault than a tracker. Best as a foundation rather than a daily experience — see is Apple Health private for period tracking?

Clue — more careful than Flo, still server-based

If you want a mainstream app and just want to step up from Flo, Clue (GDPR-based, no FTC history) is a reasonable move. But it requires an account and stores data on its servers, so it’s a different tier from the on-device options. Details in is Clue safe?

How to pick in one line each

Want the nicest private experience on iPhone? Dew.
Want a nonprofit with no profit motive? Euki.
Want open source you can audit? Drip.
Want to trust only Apple, bare-bones? Apple Health.
Want mainstream, a step up from Flo? Clue.

For the full framework behind these picks, see what makes a period tracker private and the best period tracker apps.

Ready to move?

Switching cleanly is two steps most people overthink: export (or just re-enter) your history, then actually delete your Flo account — not just the app. We wrote the exact process in how to switch from Flo to a private period tracker.