Privacy Policy

Last updated: July 6, 2026

Mandarin Audio ("we," "us," or "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you visit our website or use our mobile applications.

1. Data Controller

The data controller for Mandarin Audio is: Mandarin Audio, Harrow, England. Email: privacy@mandarinaudio.com

2. Information We Collect

We collect the following categories of information:

• Account information — email address, display name, and authentication credentials when you create an account.
• Learning progress data — lessons completed, vocabulary mastered, listening time, and exercise results.
• Feedback data — ratings, reviews, and support correspondence you send us.
• Device information — device type, operating system, app version, and locale for compatibility and support.

3. How We Use Your Information

We use the information we collect to operate and improve the service, personalize your learning experience, send transactional notifications, and respond to support requests. We do not sell your personal data.

4. Third-Party Services

We share data with the following categories of processors under data processing agreements:

• Cloud hosting (Firebase, .NET API on Fly.io)
• Email delivery (Postmark)
• Payment processing (RevenueCat / Stripe)
• Analytics (anonymized usage signals)

5. Your Rights

Under UK GDPR you have the right to:

• Access the personal data we hold about you
• Rectify inaccurate data
• Erase your data ("right to be forgotten")
• Restrict or object to processing
• Port your data in a machine-readable format

To exercise any of these rights, contact us atprivacy@mandarinaudio.com. We respond within 30 days.

6. Data Retention

We retain account data for as long as your account is active. Learning progress data is retained indefinitely unless you request deletion. Backups are purged on a rolling 90-day cycle.

7. Children's Privacy

Our service is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected such information, please contact us so we can delete it.

8. Changes to This Policy

We may update this policy from time to time. The "last updated" date above reflects the most recent change. Material changes will be communicated via email or in-app notification.

9. Contact

Questions about this policy should be directed toprivacy@mandarinaudio.com.