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Last updated October 2026

Privacy Policy

SproutStack is a learning site. Most of what you do — lesson progress, notes, quiz scores, XP, streaks — is stored only in your own browser (localStorage) and never leaves your device unless you sign in.

If you create an account

Sign-in is handled by Supabase (authentication) using GitHub, Google, or email magic links. We receive your email address and, for OAuth providers, your public profile name. If you opt in, your progress and XP sync to our database so they follow you across devices. Our database tables are restricted so each user can only read and write their own rows.

Analytics

We use Vercel Web Analytics to see aggregate visits and popular pages. It does not use third-party cookies and does not track you across sites.

What we never do

We never sell your data, run third-party ad trackers, or share personal data except with the infrastructure providers above as needed to run the service.

Your control

Clear your browser storage to wipe local data. To delete your account and synced data, email saraswatgajendra97@gmail.com from your account email and we will remove it.

Terms of Service →