Privacy Policy

What this covers

This policy explains what information Excel Practice Lab collects when you use the site, why we collect it, and the choices you have. By using Excel Practice Lab you agree to this policy.

Information we collect

• Account information: the email address and password you sign up with (handled by our authentication provider, Supabase) and a username you choose, which is shown publicly on the leaderboard and your public profile page.
• Progress and activity data: which lessons and exercises you've completed, points earned, your current and longest streak, and badges earned.
• Payment information: if you subscribe to Pro, payments are processed by Stripe. We never see or store your full card number — Stripe handles that directly.
• Usage analytics: we use Microsoft Clarity to understand how visitors use the site (page views, clicks, scroll behavior, session recordings) so we can improve the product. Clarity may set cookies and collect your IP address and device information. See our Cookie Policy for details.

How we use this information

To provide the service (track your progress, grade exercises, show your points and streak), to process Pro subscription payments, to maintain the public leaderboard, to understand and improve the product through analytics, and to communicate with you about your account when necessary.

What's public

Your username, total points, current and longest streak, level, and earned badges are visible to anyone on the leaderboard and on your public profile page (/profile/[username]). Your email address and password are never shown publicly. You can change your username at any time from your profile.

Third parties we share data with

• Supabase — authentication and database hosting.
• Stripe — payment processing for Pro subscriptions.
• Microsoft Clarity — anonymized usage analytics.
• Vercel — site hosting.

We do not sell your personal information to anyone.

Your choices

You can edit your username, view your progress, or delete your account at any time by contacting us. Deleting your account removes your profile, progress, and leaderboard entry.

Changes to this policy

We may update this policy from time to time. We'll update the effective date above when we do.

Contact

Questions about this policy? Email us at support@excelpracticelab.com.