Privacy Policy
Last Updated: April 20, 2026
Welcome to Guanzhai Feng Shui ("we," "our," or "us"). This Privacy Policy explains how we collect, use, store, and protect your information when you use our mobile application.
1. Information We Collect
We collect the following types of information:
- Google Account Information: When you sign in with Google, we access your name, email address, and profile picture. We do not access or store your Google password.
- Device Sensor Data: We access your device's compass and accelerometer sensors to provide feng shui measurement functionality. This data is processed locally on your device and is not transmitted to our servers unless you explicitly save a report.
- Location Data: We may request approximate location data to improve compass accuracy. Location data is not stored or transmitted.
- Family Member Information: You may optionally input birth dates and names of family members for feng shui analysis. This information is stored in your account and associated with your saved reports.
- Purchase Information: When you make in-app purchases through Google Play, we receive transaction verification data from Google Play's billing system. We do not process or store payment card information.
2. How We Use Your Information
- To provide and maintain the app's core functionality (feng shui measurement and analysis)
- To authenticate your identity and sync your saved reports across devices
- To process in-app purchases and manage your report token balance
- To improve app performance and user experience
- To send you important service-related notifications
3. Data Storage and Security
Your data is stored securely using Google Firebase services (Firestore). We implement industry-standard security measures to protect your information. Your saved reports and family member data are associated with your Google account and are only accessible to you.
4. Data Sharing
We do not sell, trade, or rent your personal information to third parties. We may share data only in the following circumstances:
- With Google Firebase for authentication and data storage
- With Google Play for processing in-app purchases
- When required by law or to protect our legal rights
5. Children's Privacy
Our app is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us immediately.
6. Your Rights
You have the right to:
- Access the personal data we hold about you
- Request deletion of your account and associated data
- Opt out of data collection by discontinuing use of the app
7. Third-Party Services
Our app uses the following third-party services:
- Google Sign-In: For authentication
- Firebase (Google): For data storage and backend services
- Google Play Billing: For in-app purchases
Please review the respective privacy policies of these services.
8. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any significant changes through the app or by updating the "Last Updated" date above.
9. Contact Us
If you have any questions or concerns about this Privacy Policy or our data practices, please contact us:
Email: guanzhai.fengshui@gmail.com
By using Guanzhai Feng Shui, you agree to the collection and use of information in accordance with this Privacy Policy.