This Privacy Policy applies to the Sungy mobile application (the "Application"), created and operated by Sang Ngo (the "Service Provider"). The Application is provided as a freemium service offering both free content and optional premium features.
Information We Collect
When you use the Application, we may collect the following types of information:
- Account & Authentication Information: If a parent or guardian creates an account via Google Sign-In or Apple Sign-In, we collect your email address, display name (if provided), and a unique user identifier (UID) to authenticate your account.
- Learning & Cloud Sync Progress: Your learning progress, completed lessons, achievements, and settings may be stored locally on your device and synchronized with our secure cloud servers (Google Firebase Firestore) when signed in.
- Purchase & Subscription Information: When you purchase an optional premium subscription or in-app product, transaction details and entitlement statuses are processed securely through Apple App Store / Google Play Store and managed via RevenueCat. We do not store or process payment card details directly.
- Device & Diagnostic Information: Device type, operating system version, app version, network state, IP address, performance data, and crash logs collected for diagnostic and analytical purposes.
Location Data
The Application does not collect or request precise GPS location. Approximate regional location may be inferred automatically from IP addresses for security, analytics, and service reliability.
Notifications
The Application may request permission to send local notifications (such as daily learning reminders). These notifications are generated locally on your device. You can manage or disable notification permissions anytime in your device settings.
How We Use Information
We use the collected information solely to:
- Provide, operate, and maintain the Application and its features
- Synchronize learning progress across devices for signed-in accounts
- Verify and manage premium subscription entitlements
- Analyze usage trends and diagnose technical issues or crashes
- Protect the security of our services and prevent fraudulent activity
No Advertising
The Application is designed for children and learners. It does not contain third-party advertising networks or collect user data for targeted behavioral advertising.
Third-Party Services
The Application relies on trusted third-party service providers to power authentication, database sync, crash reporting, and subscription management. These services process data according to their respective privacy policies:
- Google Play Services & Google Sign-In
- Apple App Store & Apple Sign-In
- Google Firebase (Auth, Firestore, Functions, Remote Config, App Check, Crashlytics)
- RevenueCat (In-App Purchases & Subscriptions)
Children's Privacy
Data Sharing & Retention
We do not sell, rent, or trade your personal data. We only share information with trusted infrastructure providers listed above strictly as required to operate the service or to comply with applicable legal obligations.
Account and progress data are retained for as long as your account remains active. If you choose to delete your account, your personal data and cloud progress will be erased permanently from our primary databases.
Account & Data Deletion
You have full control over your data:
- In-App Deletion: Open the app, enter Parent Mode (🔒 icon), navigate to "Parent Account", and select "Delete account" for immediate permanent erasure.
- Email Request: Contact us at [email protected] from the email address registered with your account. For more details, visit our Account Deletion Page.
Security
We implement industry-standard technical safeguards, including encrypted HTTPS network transmissions and Firebase security rules, to protect your data. However, no electronic storage or transmission method is 100% secure.
Changes To This Privacy Policy
We may update this Privacy Policy periodically. Any updates become effective immediately upon being published on this page.
Contact Us
If you have any questions or concerns regarding this Privacy Policy, please contact us at: [email protected].