Privacy Policy
Your data stays with you. Here is exactly what we collect, store, and share — in plain English.
1. Information we collect
TreadmillCalc is a client-side tool. The values you enter (weight, speed, incline, duration, age) are processed entirely in your browser and are never transmitted to a server.
2. Local storage
We store a single preference — your selected theme (light or dark) — in your browser's localStorage so the site remembers it on your next visit. You can clear this at any time from your browser settings.
3. Cookies
We do not set tracking cookies. We do not use third-party advertising networks. The only third-party request the site makes is to Google Fonts to load the Inter typeface.
4. Analytics
We do not run analytics, fingerprinting, session recording, or behavioral tracking of any kind on this site.
5. Third-party services
- Google Fonts — used to serve the Inter font family. Subject to Google's privacy policy.
6. Your rights
Because we do not collect personal data, there is nothing to access, export, or delete on our side. You are in full control of any data stored locally in your browser.
7. Children's privacy
This site is suitable for all ages. We do not knowingly collect information from anyone, including children under 13.
8. Changes to this policy
If we update this policy, the revised version will be posted here with a new "last updated" date.
9. Contact
Questions about privacy? Reach us via the contact page.