Privacy Policy — Nguyen Tan Hoang

1. Introduction

This Privacy Policy applies to all mobile applications developed and published by Nguyen Tan Hoang ("we", "us") on Google Play and the App Store. We respect your privacy. This policy explains how we collect, use, and protect your information when you use our apps on Android and iOS.

2. Information We Collect

Game progress data: completed levels, hint count, settings (language, theme, sound). Stored locally and synced to the cloud (Firebase Firestore) to protect your progress.
Anonymous identifier: Firebase Authentication creates an anonymous ID to sync data across devices without requiring account registration.
Advertising data: Google AdMob may collect device data and ad interaction data per Google's policies.
Transaction data: RevenueCat handles in-app purchase information. We do not store credit card details.

3. How We Use Information

Save and sync your progress across devices
Display advertisements (if you haven't purchased the no-ads package)
Process in-app purchases
Improve user experience

4. Third-Party Services

Our apps use the following services, each with their own privacy policies:

Google Firebase — data storage and authentication
Google AdMob — advertising
RevenueCat — in-app purchase processing

5. Children's Privacy

Our apps are not directed at children under 13 and do not knowingly collect personal information from children. If you believe your child has provided information, please contact us for deletion.

6. Data Security

Data is protected by Google Firebase with SSL/TLS encryption. We do not sell your data to third parties.

7. Your Rights

You may request deletion of all your data by uninstalling the app (local data) or contacting us to delete cloud data.

8. Contact

For questions about this policy, please contact:
hoangntvc@gmail.com