Privacy Policy
Last updated: 2026-06-07
We respect your privacy and collect only what we need to run and improve the platform.
1. What we collect
Account data: your email address (via our auth provider, Supabase).
Learning progress: stages completed, quiz scores, streaks, and XP.
Usage analytics: de-identified interaction events (via PostHog) to improve the product.
Payment data is handled by Stripe / WayForPay — we never store card numbers.
2. How we use it
To provide the service, save your progress across devices, show the leaderboard (opt-in, only if you set a public display name), and analyze and improve the learning experience.
3. Cookies & local storage
We use localStorage to keep your progress and preferences (theme, language) and cookies for your session and analytics. Guest progress lives only in your browser until you create an account.
4. Third-party services
Supabase (authentication & database), PostHog (analytics), Stripe and WayForPay (payments), and Railway (hosting). Each has its own privacy policy.
5. Data retention
We keep your data for as long as your account exists. You can ask us to delete your account and associated data.
6. Your rights
You can access, correct, or delete your data, and opt out of the leaderboard at any time. Contact us and we will help.
7. Children
The platform is intended for high-school students and above. If you are below the age of digital consent in your country, please use it with a parent or teacher’s permission.
8. Security
Data is transmitted over secure connections and passwords are stored hashed by our auth provider. No system is perfectly secure, so please choose a strong password.
9. Changes
We may update this Policy; material changes will be noted on the site.
10. Contact
For privacy questions, reach us at the address below.