Privacy Policy
Last updated: 7 September 2026
Information we process
When you create an account, we process your email address, display name, authentication identifiers, and learning progress. Google sign-in may provide your verified email address, name, and profile image. We request only openid, email, and profile access.
Guest lesson data
Quiz answers and playground work completed before registration are stored locally in your browser. They are not written to your account unless a migration feature is offered and you choose to use it.
How data is used
We use account data to authenticate you, save progress, provide course features, prevent abuse, and operate the service. We do not sell personal information.
Your rights
Depending on your location, including under the GDPR, you may request access, correction, deletion, restriction, portability, or object to processing. Contact the service operator using the contact details published on the main site.