Privacy Policy

This Privacy Policy explains how EstimateVO2MaxCalculator.com (“we”, “us”, “our”) handles information when you use our website and VO₂ max estimation tools.

What we collect

• Usage data: basic, aggregated metrics (e.g., page views, device type, approximate region) to monitor performance and improve UX.
• Server logs: standard web logs (IP address, user-agent, timestamps) for security and reliability.
• Messages you send: if you contact us via the contact page, we receive what you submit.

Calculator inputs

Our calculators are designed to work without accounts. Inputs you enter (e.g., age, heart rate, time, distance, sex, weight) are processed to compute your estimate. We strive to keep these inputs on your device (in your browser) and not persist them on our servers, except where necessary to operate the site (for example, if you intentionally submit a form or use a share feature that encodes values into a link that you can send to others).

How we use information

• Provide, maintain, and improve the calculators and site
• Secure the service, prevent abuse, and troubleshoot issues
• Respond to messages you send

Legal bases (EEA/UK)

• Legitimate interests for basic analytics, security, and service improvement
• Consent where required (e.g., for any non-essential cookies or optional features)

Retention

Contact messages are kept as long as needed to respond and maintain records. Logs and analytics are kept for a limited period consistent with security and operations.

Sharing

We do not sell personal information. We may share limited data with trusted service providers (hosting, security, analytics) under confidentiality and data-protection obligations. We may disclose information if required by law or to protect rights, safety, or the integrity of the service.

Your choices & rights

• You can use the calculators without creating an account.
• If you’re in the EEA/UK, you may have rights to access, correct, delete, or restrict processing of your personal data. To exercise rights, contact us via the contact page.
• California residents may have rights under the CCPA/CPRA and can submit requests via the same channel.

Cookies & analytics

If we use analytics, we prefer privacy-respecting tools and minimal data. If any non-essential cookies are introduced, we will provide notice and controls where required by law.

Data security

We take reasonable technical and organizational measures to protect information. No internet service is 100% secure, but we work to keep risk low.

Children

This site is not directed to children under 13 (or the age required by local law). If you believe a child provided personal information, please contact us so we can delete it.

Changes

We may update this policy from time to time. If changes are material, we’ll take reasonable steps to notify you (e.g., a site banner).

Contact

Questions about privacy? Reach us via the contact page.

Last updated: November 4, 2025