Privacy

The short version

Nothing is collected unless you switch it on. There is no account, no profile, no advertising and no third party watching you use the timer.

This policy covers both the Tide app on iOS and Android and this website.

What stays on your device

Your settings and your practice history are kept in your browser or app storage and are never sent anywhere. Three keys hold everything: tide.prefs.v1 (your chosen pattern, pace, length, sound and haptics), tide.history.v1 (the sessions you have completed) and tide.audio-diag.v1 (a small technical log used only when diagnosing an audio fault).

Clearing your browser data, or deleting the app, deletes all of it. There is no copy anywhere else, which also means there is nothing for me to restore if you do.

The optional usage setting

The app can send anonymous counts, and it is off until you turn it on. You are asked once, on the screen after your first completed session, and never asked again whatever you answer.

If you turn it on, four things can be sent: that a session started and which of the patterns it was; that a session finished, with its length as a rough band — one of 1-2, 3-5, 6-10 or 11-20 minutes, never the actual number — and whether it ran to the end; that the Wim Hof safety note was accepted or declined; and that a custom pattern was saved. No identifier, no device fingerprint, no location, no text you have typed.

The processor is Aptabase, on its European servers in Germany. The setting lives in Settings and can be switched off at any time, which stops it immediately.

This website

The site sets no cookies and has no advertising, and the timer on each page runs entirely in your browser — pressing Begin sends nothing anywhere.

The pages include a loader for Microsoft Clarity, a privacy-focused analytics tool, which is inert unless a project key is configured. No key is configured, so nothing loads and nothing is sent. If that ever changes, this page will say so before it does, and the site will ask first.

The site is hosted by Vercel, which keeps standard server request logs as any web host does.

Your rights, and how to use them

Because nothing identifies you, there is no account to export or delete and no record I could look up. Switching the usage setting off stops all collection; clearing app or browser data removes everything held locally.

If you have a question about any of this, write to me at the address on the contact page. I am in Norway, so the GDPR applies, and you can complain to Datatilsynet if you are not satisfied with how I answer.