earth87human

Privacy Policy

Last updated: 2026-05-29

The short version

Every tool on guitar.earth87human.com is a static web page. There is no backend server. The tools do not collect your data. They do not use cookies for tracking. They do not embed third-party analytics. There are no user accounts. Everything you do — inputs, settings, statistics — stays on your device in your browser's localStorage.

1. Information we do not collect

We do not collect, store, transmit, or have access to:

  • Your name, email address, phone number, or any personal identifier
  • Anything you type or generate while using a tool
  • Your usage counts, statistics, or history
  • Your settings or theme preferences
  • Your IP address (we operate no servers that log requests)
  • Behavioral analytics, click tracking, scroll tracking, or heatmaps

2. localStorage

Tools use your browser's localStorage feature to remember things on your device, for example:

  • Per-tool settings (durations, ranges, options, and similar)
  • Your recent results or history, where a tool keeps one
  • Your language, theme, color mode, and other UI preferences

This data is stored entirely on your device. It is not transmitted to any server. You can view it in your browser's developer tools, export it where a tool offers an "Export" option, or delete it at any time using a tool's reset option or your browser's settings.

3. Hosting

The site is served by Cloudflare Pages. Cloudflare may automatically log certain technical information about requests (IP address, browser, referrer) for the purposes of providing the hosting service, preventing abuse, and generating aggregate traffic statistics. We do not access these logs. See Cloudflare's privacy policy for details.

4. Device features

A tool may use certain device features. Any such feature runs locally on your device and sends no data anywhere:

  • Audio — note sounds are generated in real time in your browser (Web Audio); nothing is recorded or transmitted.
  • Keep your screen on (Wake Lock API) — if a tool uses it, only while the tool is actively running on your device.
  • Vibrate your device (mobile only) — purely a local hardware signal, no data involved.

You can revoke any such permission at any time in your browser's site settings.

5. Service Worker (offline support)

Tools may register a Service Worker to enable offline access. The Service Worker caches site files (HTML, CSS, JavaScript, fonts) so the tool works without an internet connection. It does not collect or transmit any usage data. You can unregister it in your browser's developer tools under Application > Service Workers.

6. Advertising (AdSense)

If, at a future date, this site displays advertisements via Google AdSense, those ads will be served by Google and may use cookies and similar technologies to display relevant ads. Specifically:

  • Google may use cookies to serve ads based on a user's prior visits to this or other websites
  • Google's use of advertising cookies enables it and its partners to serve ads based on user visit history
  • You can opt out of personalized advertising by visiting Google's Ads Settings
  • You can opt out of third-party vendors' use of cookies for personalized advertising by visiting youronlinechoices.com (EU) or aboutads.info (US)

At time of writing, no ads are displayed.

7. Children

These tools are suitable for users of all ages and do not knowingly collect personal information from children under 13. Since we do not collect any personal information from anyone, this includes children.

8. Your rights (GDPR / CCPA / global)

Because we do not collect personal data, there is no data to access, correct, port, or delete on our side. To delete your local data:

  • Use a tool's reset option where one is provided
  • Or clear your browser's site data for guitar.earth87human.com
  • Or export a JSON backup first, where a tool offers it

9. Open source verification

The complete source code of this site is published at github.com/earth87human/guitar under the MIT License. You can inspect the code to verify exactly what the site does (and doesn't do) in your browser. There is no obfuscation. There are no minified third-party scripts. What you see is what runs.

10. Changes to this policy

This policy may be updated occasionally. The "Last updated" date at the top reflects the most recent change. Material changes (such as introducing analytics or advertising) will be announced clearly. Continued use of the site after a change indicates acceptance of the updated terms.

11. Contact

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