Privacy Policy

Last updated October 2026.

What we collect

Calculator inputs stay in your browser. Shift times and sleep preferences you enter into our tools are processed locally on your device. They are never sent to our servers.
Basic analytics. We use privacy-respecting analytics to understand which pages are visited, so we know what to build next. This data is aggregated and never sold.
Newsletter. If you join the email list, we store your address solely to send the newsletter. Unsubscribe anytime with one click.

We do not sell personal data.
We do not run accounts, so there are no passwords to leak.
Affiliate retailers (e.g. Amazon) have their own privacy policies for purchases made on their sites.

Privacy questions: contact us.