Privacy Policy

This Privacy Policy explains how UmamusumeAffinityCalculator.com (“we”, “us”, “our”) handles information when you use our compatibility/affinity calculator.

What the calculator does

The tool lets you select a Main Character plus parents/grandparents to compute an estimated compatibility score (“Total Affinity”), along with indicators like ○ / ◎.

What we collect

• Basic usage data (analytics): aggregated metrics such as page views, device/browser type, and approximate region—used to understand what’s useful and improve speed/UX.
• Server logs: standard web logs (IP address, user-agent, timestamps, requested pages) for security, abuse prevention, and reliability.
• Messages you send: if you contact us through the contact page, we receive the information you submit.

What we do not collect by default

• No required accounts or passwords to use the calculator.
• No payment details.
• No government ID numbers.

How we use information

• Operate, maintain, and improve the Service (including performance and usability)
• Secure the site, prevent abuse, and troubleshoot
• Respond to your messages and support requests

Cookies & similar technologies

We may use cookies or similar technologies for essential site operation and/or analytics. If we introduce any non-essential cookies that require notice/controls, we will provide them where required by law.

Sharing

We do not sell your personal information. We may share limited information with trusted service providers (for example, hosting, security, or analytics) who process it on our behalf and are bound by confidentiality and data-protection obligations. We may also disclose information if required by law or to protect the rights, safety, and integrity of the Service.

Retention

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

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 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 via the contact page.

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 Privacy Policy from time to time. If changes are material, we’ll take reasonable steps to notify you (for example, a site notice).

Contact

Questions about privacy? Reach us via the contact page.

Last updated: November 30, 2025