Privacy and cookies
Atsusa is in a free tester phase. This page covers the website at atsusa.app. The Garmin tester hub has its own privacy page.
Always on, no cookies
To see how many real people use the page, we record page views, clicks on buttons, how far you scroll and how long the page is open. This uses a random visit ID that lives only in your browser tab and is gone when you close it. We store your browser type and network address only in scrambled (hashed) form, never in readable form. These events go to our own database and to TelemetryDeck, a privacy-friendly analytics service. They contain no names, emails or free text.
We also keep traffic that looks automated (crawlers, scripts), labelled as such, so we can tell it apart from people.
Only with your consent
Google Analytics (visit statistics) and Microsoft Clarity (session recordings with form fields masked) are loaded only after you accept them, each with its own switch. If you accept analytics we also keep a random visitor ID in your browser to recognise a return visit. Rejecting or ignoring the banner loads neither tool.
Your choice is remembered for 12 months.
What you send us
If you join the tester group, ask for the Garmin install link, tell us about another watch or send a message, we store the email address and what you wrote, and use it only to reply or to contact you about testing. To have it removed, send us a message from the footer of the homepage.
Not a medical device
Atsusa is an early warning, not a diagnosis. It is not affiliated with Apple or Garmin.