What we collect
Email (for sign-in only), display name, optional company + role, IANA timezone, and your quiz attempts and answers.
What we don't
We do not send your data to Anthropic or any third-party LLM provider. Our prompts to Claude are about Lenny's content, not your behavior.
Sub-processors
Cloudflare (hosting, D1, KV), Better Auth's email sender (sign-in only), Google (OAuth), GitHub (CI). See docs/subprocessors.md.
Your rights
You can download all your data (Profile → "Download my data") or delete your account (Profile → "Delete my account"). Deletion anonymizes your historical sessions; the leaderboard history remains aggregated but no longer identifies you.
Cookies
We use one cookie to keep you signed in. Nothing else. Required for the app to function.