Trust & legal
Privacy Policy
What the current application stores and processes, and the controls available to users.
Guest use
Guest simulations do not require an account. Project autosaves and tutorial status are stored in this browser's local storage. Clearing site data removes those local records.
Google Sign-In and Firebase
If you sign in, Firebase Authentication processes your Google account identifier, name, and email address. YDK Simu Lab stores your user identifier, profile preferences, policy acceptance version and time, tutorial state, and cloud projects in Firestore. The application does not store your Google profile image in Firestore.
Feedback
The public feedback form processes the category, subject, message, optional reproduction details, optional page or experiment name, and optional reply email you submit. A server-side email provider delivers the message. Anti-abuse controls may temporarily process a one-way network-address hash and request counts; the application does not need to retain the original network address.
Cookies, storage, and analytics
Firebase and Google Sign-In may use essential browser storage or cookies for authentication and security. We use Vercel Web Analytics and Speed Insights to understand page visits and performance, such as page views, browser/device performance metrics, and general usage trends. We use this information to improve YDK Simu Lab. We do not use it to collect passwords or private experiment content.
Retention and controls
Local records remain until cleared. Cloud profile and project records remain until deleted or the service's retention process removes them. Signed-in users can delete projects individually and can request deletion of their YDK Simu Lab cloud data and authentication record from Profile settings.
Children and regional rights
The interface uses neutral, age-appropriate language, but the service owner has not established a verified age-assurance or parental-consent program. Schools, guardians, and the owner must assess child-privacy, student-record, international-transfer, and regional legal requirements before deployment.
Security and contact
Access rules restrict private Firestore records to their authenticated owner, but no online system is risk-free. Use the Contact / Support page for privacy questions or data requests.