Privacy Policy

1. Introduction

CalibRank ("we", "our", "us") operates the website at calibrank.com. This Privacy Policy explains how we collect, use, and protect your information when you use our platform.

2. Information We Collect

Account information: When you sign up, we collect your email address and username via Google OAuth or email login. We do not store your password — authentication is handled by our identity provider (Supabase Auth).

User-generated content: Arguments, votes, debate requests, and other content you submit on the platform.

Device fingerprints: For guest users who vote without an account, we generate a browser fingerprint to prevent duplicate voting. This fingerprint is not linked to your identity.

Usage data: We use PostHog for product analytics to understand how users interact with the platform (pageviews, feature usage). This data is used solely to improve CalibRank.

Error data: We use Sentry for error tracking to identify and fix bugs. Error reports may include technical information about your browser and device.

3. How We Use Your Information

• To provide and maintain the CalibRank platform
• To score arguments using AI and compute leaderboard rankings
• To detect and filter toxic content
• To prevent abuse (rate limiting, duplicate vote detection, CAPTCHA verification)
• To send notifications about activity relevant to you (challenges, replies, follows)
• To improve the platform based on aggregate usage patterns

4. AI Processing

Arguments you submit are processed by AI models for toxicity filtering and quality scoring. This processing is essential to the core function of CalibRank. AI-generated scores, breakdowns, and highlights are stored alongside your arguments. We do not use your content to train AI models.

5. Data Sharing

We do not sell your personal information. We share data only with:

• Supabase — database and authentication provider
• Google AI / Groq — AI processing for scoring and toxicity filtering
• Cloudflare — CAPTCHA verification (Turnstile)
• Vercel — hosting provider
• Sentry — error tracking
• PostHog — product analytics

6. Public Content

Arguments, usernames, scores, and badges are publicly visible on the platform. Your email address is never displayed publicly. If you participate as a guest, your arguments appear as "Anonymous Heckler" with no identifying information.

7. Data Retention

Your account data and content are retained as long as your account is active. Rate-limiting records are automatically deleted after 24 hours. If you wish to delete your account and associated data, please contact us at hello@calibrank.com.

8. Cookies

We use essential cookies for authentication and session management. PostHog may set analytics cookies if you have an account. We do not use advertising cookies.

9. Your Rights

You have the right to:

• Access the personal data we hold about you
• Request correction of inaccurate data
• Request deletion of your account and data
• Export your data

To exercise these rights, contact us at hello@calibrank.com.

10. Changes

We may update this Privacy Policy from time to time. We will notify users of significant changes via the platform. Continued use of CalibRank after changes constitutes acceptance of the updated policy.

11. Contact

If you have questions about this Privacy Policy, contact us at hello@calibrank.com.