Privacy Policy

TheoremPath is a reference and learning site for ML theory and mathematics. This page describes what data is collected, why, and how it is handled.

What we collect

• Anonymous usage analytics. Page views, referrers, device type, and country via Vercel Analytics. No cookies, no cross-site tracking.
• Performance metrics. Core Web Vitals via Vercel Speed Insights. Aggregated, not tied to identity.
• Error reports. Client and server errors via Sentry. May include request path and a sanitized stack trace.
• Account data (optional). If you sign in, we store your email and authentication provider ID via Clerk. Used only for authentication and progress tracking.
• Quiz and progress data (if signed in). Your quiz answers, review schedule, and topic completion are stored so you can resume later.

What we do not collect

• No advertising identifiers.
• No social graph or contact list uploads.
• No selling or sharing of personal data with advertisers.

Cookies

We use first-party cookies for authentication (Clerk) and theme preference. No third-party advertising or tracking cookies.

Data retention

Usage analytics are retained for 12 months. Error reports are retained for 90 days. Account data persists until you request deletion. You can delete your account at any time from the dashboard, which removes all associated progress data within 30 days.

Processors we use

• Vercel (hosting, analytics, error infrastructure)
• Cloudflare (DNS, edge)
• Clerk (authentication)
• Sentry (error reporting)
• OpenAI and Groq (only when you use the Ask feature, sent as anonymous queries)

Your rights

You can request access to, correction of, or deletion of your data by contacting us via the contact page. EU and UK users have rights under GDPR. California users have rights under CCPA. We honor these regardless of jurisdiction.

Changes

Material changes to this policy will be announced on the homepage and dated above. Continued use after notice constitutes acceptance.