Privacy Policy

We collect the following types of information:

• Account information: Email address, display name, and optional profile image when you create an account.
• Learning data: Lesson progress, quiz answers, vocabulary statistics, and streak information.
• Usage analytics: Page views, feature usage, and session data via PostHog. This data is anonymized and used to improve the Service.
• Payment information: Processed securely by Stripe. We do not store credit card numbers on our servers.

• To provide and improve the Service
• To personalize your learning experience
• To process payments for subscriptions
• To send transactional emails (password resets, verification)
• To monitor and fix errors via Sentry
• To analyze usage patterns and improve features

We do not sell your personal data. We share data only with:

• Stripe: For payment processing
• PostHog: For anonymized product analytics
• Sentry: For error monitoring (no personal data included)
• Resend: For transactional email delivery

Your data is stored on secure PostgreSQL databases. Passwords are hashed using industry-standard algorithms. We use HTTPS for all data transmission.

Guest profiles are automatically deleted after 30 days of inactivity. If you create an account, your guest progress can be migrated to your new account.

We use session cookies for authentication. PostHog may use cookies for analytics. You can control cookie preferences in your browser settings.

You have the right to:

• Access your personal data
• Request correction of inaccurate data
• Request deletion of your account and data
• Export your learning progress data

Chamelingo is not directed at children under 13. We do not knowingly collect personal information from children under 13.

We may update this Privacy Policy from time to time. We will notify users of significant changes via email or in-app notification.

For privacy-related questions, contact us at privacy@chamelingo.com.