Privacy Policy

What we store

• Your account, via GitHub sign-in: the email and basic profile GitHub shares through our auth provider. We never see or store a password.
• The LeetCode problems you track — metadata only: title, number, slug, difficulty, tags. We never store problem statements; every problem links out to leetcode.com.
• Your practice data: Reviews (your Ratings and timestamps), notes and solution snippets you choose to save, scheduling state, and your settings (caps, retention, timezone, digest preferences).

What we don't do

• No advertising, no cross-site tracking, no selling your data.
• No payment information is collected — the app is free and support is a voluntary external Ko-fi link.
• Only essential cookies (your session, sidebar state, theme).

How your data is used

To run the service: schedule your Cards, show your progress, and — if you turn it on — send a daily email digest of what's due. Your Review history also helps improve the scheduling algorithm over time. You can turn the digest off any time from the unsubscribe link in any email or in Settings.

Who processes it

We rely on a few providers to operate: Supabase (database and authentication), Vercel (hosting and anonymous, cookieless usage analytics), Resend (sending the digest email), and GitHub (sign-in). Your data may be processed on their servers outside your country.

Your rights

You can access, correct, export, or delete your data. Settings has a one-click JSON export of everything tied to your account. To delete your account and its data, email jiseeeh@proton.me and we'll remove it. Consistent with the PH Data Privacy Act (2012) and GDPR principles.

Changes

We may update this policy; the date above always reflects the current version. U-Leet² is not directed at children under 13.