Privacy Policy

Data Controller

ZentaWeb
Contact: contact@zentalist.app

Collected Data

• Account data: Email address, display name (when you create an account via Firebase Authentication)
• Payment data: Processed by platform-specific providers — Apple App Store or Google Play for in-app purchases (managed via RevenueCat). We do not store credit card numbers.
• Usage data: Learning progress, completed categories, challenge scores (stored locally on your device)
• Leaderboard data: Display name and score submitted to our global leaderboard (stored in Firebase Firestore)
• Technical data: IP address, device type, OS version (for analytics and security)

Purpose of Processing

• To provide and maintain the Zentalist learning platform
• To process in-app purchases and manage subscriptions
• To sync your premium access across devices
• To display your ranking on the Global Leaderboard
• To respond to support inquiries

Legal Basis (GDPR)

• Article 6(1)(b) — Contract execution (providing the service you signed up for)
• Article 6(1)(a) — Consent (for optional analytics)
• Article 6(1)(f) — Legitimate interest (security, fraud prevention)

Third-Party Services

• Google Firebase — Authentication and database (USA, Standard Contractual Clauses)
• RevenueCat — Subscription infrastructure and entitlement synchronization for in-app purchases
• Apple App Store — Payment processing for iOS in-app purchases
• Google Play — Payment processing for Android in-app purchases
• Google Analytics — Anonymous usage statistics (optional, can be disabled)

Data Retention

• Account data: Until you delete your account
• Payment records: 5 years (tax law requirement)
• Analytics data: 26 months (Google Analytics default)

Your Rights (GDPR)

• Right to access your personal data
• Right to rectification (correct inaccurate data)
• Right to erasure ("right to be forgotten")
• Right to data portability
• Right to object to processing
• Right to lodge a complaint with your local Data Protection Authority

To exercise your rights, contact us at: contact@zentalist.app

Children's Privacy

Zentalist is not directed at children under 13. We do not knowingly collect personal data from children under 13. If you believe a child has provided us with personal data, please contact us so we can delete it.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify users of significant changes through the app or by email. Continued use of the app after changes constitutes acceptance of the updated policy.