Privacy Policy

Last updated: 2026-05-25

1. Overview

This privacy policy explains what information the Guitar Fretboard Note Trainer (the "Site") collects, how it is used, and the choices you have. The Site is operated as a free, open-source educational tool.

2. Information We Do Not Collect

The Site does not require an account. We do not collect personally identifiable information such as your name, email address, phone number, or payment information. We do not sell, rent, or share personal data with third parties.

3. Local Storage

The Site uses your browser's localStorage to remember:

• Your best times per note (so you can track your records)
• Your language preference
• Whether you have dismissed the cookie/analytics notice

This data stays on your device and is never transmitted to our servers. You can clear it at any time using the "Reset records" button or your browser's settings.

4. Analytics

We may use a privacy-respecting analytics service (such as Plausible or Google Analytics 4) to understand aggregate usage patterns — page views, country, device type, and referrer. This data is anonymous and is not linked to individual users.

5. Advertising

If the Site displays advertisements (for example via Google AdSense), those ad networks may set cookies and collect data per their own privacy policies. Ad networks may use this data to show relevant advertisements. You can opt out via your browser's settings or via youronlinechoices.com.

6. Cookies

Beyond localStorage described above, third-party services (analytics, ads) may set cookies. The cookie notice at the bottom of the Site informs you of this. By continuing to use the Site after dismissing the notice, you consent to these cookies.

7. Children

The Site is suitable for users of all ages and does not knowingly collect personal information from children under 13.

8. Your Rights (GDPR / CCPA)

If you are in the European Union or California, you have the right to know what data is collected, to request deletion, and to opt out of any sale of data. Since we do not collect personally identifiable information, there is generally nothing for us to delete on our side. To clear local data, use your browser settings.

9. Open Source

The full source code of this Site is available at github.com/earth87human/guitar under the MIT License. You can inspect exactly what the Site does in your browser.

10. Changes to This Policy

This policy may be updated occasionally. The "Last updated" date at the top reflects the most recent change. Continued use of the Site after a change indicates acceptance of the updated terms.

11. Contact

For questions about this policy, open an issue at github.com/earth87human/guitar/issues.