Privacy Policy

What data we collect

Calculator inputs: None. All calculator inputs (weight, height, reps, paces, etc.) are processed entirely in your browser using JavaScript. No data is transmitted to our servers.

Analytics: We may use standard web analytics to understand aggregate site traffic — pages visited, time on site, country of origin. This data is anonymised. No personally identifiable information is collected.

Contact form: If you submit a message through our contact form, we collect your name and email address solely to respond to your inquiry. We do not add you to any mailing list or share this with third parties.

Cookies

We may use minimal cookies for basic site functionality (e.g., remembering your unit preference — kg vs lbs). We do not use advertising cookies or cross-site tracking cookies.

Third-party services

Our calculators use Tailwind CSS via CDN (served by Cloudflare) for styling. When pages load, your browser may make requests to those CDN providers per their respective privacy policies.

Children's privacy

GainCalculator is not directed at children under 13. We do not knowingly collect personal information from children.

Changes to this policy

We may update this privacy policy from time to time. The date at the top of this page indicates when it was last revised.

Contact

Questions about this policy? Contact us.