Privacy Policy

1. Information We Collect

We collect two general categories of information:

• Information you provide directly — such as your email address if you contact us or sign up for our newsletter. All calculator inputs (span, pitch, load, etc.) are processed in your browser and are not sent to or stored on our servers.
• Automatically collected information — such as your browser type, device type, approximate location (derived from IP address), pages visited, and referring site, typically gathered through cookies, local storage, and similar technologies, including by analytics and advertising partners.

2. Cookies and Local Storage

We use browser local storage to remember your display preference (light or dark mode) — this stays on your device and is never transmitted to us. We and our third-party partners may also use cookies, web beacons, and similar technologies to recognize your browser, measure site usage, and serve relevant advertising.

3. Google AdSense and Third-Party Advertising

This Site may use Google AdSense and other third-party advertising companies to serve ads. These companies may use cookies — including the DoubleClick DART cookie — to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this Site and/or other sites on the Internet.

You may opt out of personalized advertising by visiting Google's Ads Settings at adssettings.google.com. Alternatively, you can opt out of a third-party vendor's use of cookies for personalized advertising by visiting aboutads.info/choices or networkadvertising.org/choices.

For more on how Google uses information from sites that use its services, see Google's Partner Sites policy.

4. How We Use Information

• To operate, maintain, and improve the Site and its calculators
• To understand how visitors use the Site, so we can prioritize new features and fix issues
• To respond to messages sent through our Contact page or newsletter sign-up
• To serve relevant advertising through third-party ad networks

5. Data Sharing

We do not sell personal information. We may share automatically collected, non-personally-identifying information with analytics and advertising partners (such as Google) so they can perform their services, subject to their own privacy policies.

6. Children's Privacy

This Site is not directed at children under 13, and we do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us so we can remove it.

7. Your Rights (GDPR / CCPA)

Depending on where you live, you may have rights to access, correct, or delete personal information we hold about you, or to object to certain processing. Since this Site collects minimal personal information directly (primarily an email address if you contact us), most such requests can be resolved quickly — reach out via our Contact page and we'll respond promptly.

8. Data Security

We use reasonable technical and organizational measures to protect information we hold, but no method of transmission or storage over the Internet is 100% secure, and we cannot guarantee absolute security.

9. Changes to This Policy

We may update this Privacy Policy from time to time. Changes take effect as soon as they're posted, with the "Last updated" date revised accordingly.

10. Contact Us

Questions about this Privacy Policy or how your information is handled? Reach out via our Contact page.