Sigma Challenge MathQuiz
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Privacy Policy

Last updated: September 1, 2026

1. Overview

Sigma Challenge MathQuiz ("we", "us") respects your privacy. This Policy explains what data we collect, how we use it, and the choices you have. This Policy should be read alongside our Terms of Service.

2. Data We Collect

  • Account data: full name, email address, role (student/teacher/admin), school level.
  • Activity data: quiz attempts, answers, scores, XP, progress, and history.
  • Content: quizzes, questions, lessons, and figures created by teachers.
  • Subscription data: subscription status and billing handled by Stripe.
  • Technical data: language preference and basic usage analytics.

3. How We Use Data

  • Provide and personalize the educational experience (progress, recommendations).
  • Allow teachers to track student progress and manage classes.
  • Process Premium subscriptions and billing via Stripe.
  • Improve content, quizzes, and Platform features.
  • Send service-related communications (account, security).

4. Data Storage and Security

Data is stored on secure servers managed by our hosting provider. Access is restricted to authorized personnel. Payment data is handled exclusively by Stripe and is never stored on our servers.

5. Data Sharing

We do not sell your data. We share data only with: (a) Stripe for payment processing, (b) our hosting provider for storage, and (c) teachers who can view the progress of students in their classes. We may disclose data when required by law.

6. Minors

The Platform is used by secondary school students. Students under 13 must obtain parental or teacher consent before creating an account. We collect only the data necessary for the educational service.

7. Your Rights

  • Access and review your personal data from your profile.
  • Permanently delete your account and all associated data from settings.
  • Change your language preference at any time.
  • Cancel your Premium subscription at any time.

8. Cookies and Analytics

The Platform uses essential cookies for authentication and basic analytics to improve the service. We do not use third-party advertising cookies.

9. Changes to This Policy

We may update this Policy from time to time. We will notify users of significant changes via the Platform.

10. Contact

For privacy questions or data requests, please contact us.