Privacy Policy

Last updated: 14 November 2026

We collect as little as we need to run SheetSprint. This explains what and why.

What we collect

• Account details: your email address and a securely hashed password.
• Learning progress: which lessons you’ve finished, your XP and your streak. This is stored in your browser and, if you have an account, synced to our database.
• Billing: payments are handled by Stripe. We never see or store your card number. We keep your plan, subscription status and a Stripe customer ID.

How we use it

To provide and secure the service, sync your progress, take payment, send essential account emails (confirmation, password reset, receipts) and answer support requests. We don’t sell your data and we don’t show ads.

Who processes it

• Supabase (account and progress database)
• Stripe (payments)
• Vercel (hosting)

These providers process data on our behalf under their own security and privacy terms and may store it outside your country.

Cookies and storage

We use a cookie to keep you logged in, and your browser’s local storage to remember your progress. We don’t use advertising cookies.

Your rights

You can ask us to access, correct or delete your data at any time by emailing mathias@sheetsprint.com. Deleting your account removes your progress and billing record from our database. Stripe may retain transaction records as the law requires.

Changes

If we change this policy in a meaningful way we’ll update the date above.