Privacy Policy - Celestine

1. Introduction

Celestine ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application (the "App"). Please read this policy carefully. By using the App, you consent to the practices described herein. If you do not agree, please discontinue use immediately.

2. Information We Collect

Personal Information: When you create an account, we collect your email address and encrypted password. You may optionally provide your name, date of birth, birth time, and birth location for astrological calculations.

Usage Data: We collect information about how you interact with the App, including readings performed, features used, and engagement metrics.

Device Information: We collect device type, operating system version, and app version for analytics and troubleshooting.

Communication Data: If you contact us via email, we retain your message and contact information to respond to your inquiry.

3. How We Use Your Information

To provide and maintain the App's functionality, including astrological readings, chart calculations, and community features.
To personalize your experience and deliver content relevant to your zodiac data.
To communicate with you regarding account updates, technical notices, and support requests.
To improve our services through analytics and usage pattern analysis.
To comply with legal obligations and enforce our Terms of Service.

We do NOT sell your personal information to third parties. Your birth data is encrypted at rest using AES-256-GCM and is never shared with other users without your explicit consent.

4. Data Storage and Security

Your data is stored on secure servers hosted by Supabase (Google Cloud infrastructure, Singapore region). We implement the following security measures:

Encryption at rest: Birth date, birth time, and birth location are encrypted using AES-256-GCM.
Encryption in transit: All API communications use TLS/SSL.
Access control: Only authenticated users can access their own data. Our team members have restricted, audited access.
Password hashing: Passwords are hashed and never stored in plaintext.

While we take reasonable measures to protect your data, no method of electronic storage is 100% secure.

5. Data Sharing and Third Parties

We may share your information with:

Supabase — PostgreSQL database and authentication provider, for user management and data storage.
Aliyun SMTP — for sending verification and password reset emails.
Google Cloud — for underlying cloud infrastructure.

We require all third parties to respect your privacy and comply with applicable data protection laws. We may disclose your information if required by law.

6. Your Rights

Depending on your jurisdiction, you may have the following rights:

Access: Request a copy of the personal data we hold about you.
Rectification: Request correction of inaccurate or incomplete data.
Deletion: Request deletion of your account and associated data. You can do this in-app via Profile → Delete Account.
Portability: Request transfer of your data in a machine-readable format.
Withdraw Consent: Withdraw your consent at any time.

To exercise these rights, contact us at service@aivana-ai.com. We will respond within 30 days.

7. Children's Privacy

The App is not intended for individuals under the age of 13 (or 16 in the EU/UK). We do not knowingly collect personal information from children. If we become aware that a child has provided us with personal data, we will take steps to delete such information and terminate the account.

8. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new policy in the App and updating the "Last updated" date. Your continued use of the App after changes constitutes acceptance of the updated policy.

9. Contact Us

If you have questions about this Privacy Policy or wish to exercise your data rights, please contact us:

Email: service@aivana-ai.com

In-app: Profile → Help & Support