Privacy Policy

1. Local-first by design

Fitnuhealth is built on a local-first philosophy. Everything you enter in the health report — age band, symptoms, goals — is stored exclusively in your browser's localStorage by default. None of it is automatically sent to any server.

Share links encode health parameters in the URL fragment (the part after #), which browsers handle locally and never appear in our server logs.

2. What we collect

The following may be processed by our infrastructure:

• Anonymous analytics: We use Vercel Analytics to measure aggregate page traffic and region breakdowns. No personally identifiable information is collected.
• Standard HTTP logs: Our hosting provider (Vercel) retains standard server logs (IP, path, timestamp). We do not store or correlate these ourselves.

We do not use third-party advertising trackers, behavioral analytics, or cross-site cookies.

3. Health data protections

• All report data stays in your browser's localStorage by default
• You can permanently erase all local data at any time using the “Clear all data” button on the report page
• Our servers do not store, process, or analyze your report content
• Shared report links pass health parameters in the URL hash only

4. Cookies and local storage

• localStorage: Stores your report inputs, reading progress, and theme preferences. Cleared when you clear browser data.
• sessionStorage: Temporarily stores Atlas navigation state (zoom position, etc.). Automatically cleared when the browser session ends.
• Functional cookies: Used only for language preference (zh/en). No tracking cookies.

5. Third-party services

• Vercel: our hosting provider. See their Privacy Policy.

We do not sell, share, or trade your data with any third party.

6. Minors

This site is intended for adults 18 and older. We do not knowingly collect personal information from minors. Contact us if you believe a minor's data has been inadvertently collected.

7. Policy changes

Material changes will be reflected by updating the “Last updated” date at the top of this page. We will provide prominent notice of significant changes.

8. Contact

For privacy questions, email huahaoshang2000@gmail.com. We respond within 30 business days.