Privacy Policy

This Privacy Policy explains how Common Denominator Calculator (“we”, “us”, “our”) handles information when you use commondenominatorcalculator.com and its tools.

Information we collect

• Usage data: basic, aggregated metrics (e.g., page views, device type, approximate region) to improve performance and UX.
• Server logs: standard web logs (IP address, user-agent, timestamps, referrer) for security and reliability.
• Messages you send: if you contact us via the contact page, we receive what you submit.
• Clipboard actions: if you click “Share result,” your browser may request permission to copy a summary to your device’s clipboard. We do not receive clipboard contents.

What we do not collect by default

• No user accounts or passwords are required to use the calculator.
• No payment information, government IDs, or sensitive categories by default.

How we use information

• Provide, maintain, and improve the calculator and related content
• Protect the service, detect/prevent abuse, and troubleshoot
• Respond to messages you send us

Legal bases (EEA/UK)

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

Sharing

We do not sell personal information. We may share limited data with trusted service providers who help operate the Site (e.g., hosting, security, analytics). They are bound by confidentiality and data-protection obligations. We may disclose information if required by law or to protect rights, safety, or the integrity of the service.

Retention

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

Cookies & analytics

We prefer privacy-respecting analytics and minimal data. If we introduce non-essential cookies or trackers, we will provide notice and controls consistent with applicable law (e.g., consent banners in the EEA/UK).

International transfers

Where data is processed outside your country, we rely on appropriate safeguards (e.g., contractual protections) consistent with applicable law.

Your choices & rights

• You can use the calculator 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; you can reach out to make a request.

Data security

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

Children

The 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 will take reasonable steps to notify you (e.g., a banner on the Site).

Contact

Privacy questions? Reach us via the contact page.