DeepSage

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Last Updated: January 1, 2026

Shaanxi Zhenghua Information Technology Co., Ltd. ("we," "us," or "our") operates the DeepSage mobile application (the "App"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our App.

By using the App, you agree to the collection and use of information in accordance with this policy.

1. Information We Collect ​

1.1 Information You Provide ​

Account Information

  • When you sign in with Google or Apple, we collect your email address, user ID, and profile information (name, profile picture) provided by these services.
  • We do not store your Google or Apple account passwords.

User-Generated Content

  • Messages, questions, and other content you submit through the AI chat interface.
  • Audio recordings when you use voice input features (processed locally and not permanently stored).

1.2 Automatically Collected Information ​

Device Information

  • Device type, model, operating system version
  • Unique device identifiers (for authentication and fraud prevention)
  • App version and usage statistics

Log Data

  • IP address, access times, and app activity logs (for security and debugging purposes)

Local Storage

  • Chat history stored locally on your device using SQLite database
  • User preferences and settings stored via SharedPreferences

1.3 Third-Party Authentication ​

When you sign in using Google or Apple:

  • Google Sign-In: We receive your Google ID, email, name, and profile picture through Google OAuth 2.0 API
  • Apple Sign-In: We receive your Apple ID, email (optional), and name through Sign in with Apple API

We do not have access to your Google or Apple account passwords.

2. How We Use Your Information ​

We use the collected information for:

  • Service Provision: Authenticating your identity, processing your requests, and delivering AI-powered analysis
  • Communication: Responding to your inquiries and providing customer support
  • Service Improvement: Analyzing usage patterns to enhance features and user experience
  • Security: Detecting and preventing fraud, abuse, and security incidents
  • Legal Compliance: Complying with applicable laws, regulations, and legal processes

We do not use your personal information for advertising or marketing purposes.

3. Data Sharing and Disclosure ​

3.1 Third-Party Service Providers ​

We may share your information with:

  • Authentication Providers: Google (Google Sign-In), Apple (Sign in with Apple)
  • Cloud Infrastructure: Our backend servers for authentication and chat processing
  • Payment Processors: RevenueCat for in-app purchase processing (if applicable)

These third parties are contractually obligated to protect your information and use it only for specified purposes.

3.2 Legal Requirements ​

We may disclose your information if required by law, court order, or government request, or to:

  • Protect our legal rights
  • Prevent fraud or security threats
  • Protect user safety

3.3 Business Transfers ​

If we undergo a merger, acquisition, or asset sale, your information may be transferred to the successor entity.

We do not sell your personal information to third parties.

4. Data Storage and Security ​

4.1 Storage Location ​

  • Local Storage: Chat history is stored locally on your device
  • Server Storage: Authentication tokens and user IDs are stored on our secure servers

4.2 Security Measures ​

We implement industry-standard security measures including:

  • HTTPS encryption for data transmission
  • Secure token-based authentication
  • Access controls and monitoring
  • Regular security audits

However, no method of transmission or storage is 100% secure. We cannot guarantee absolute security.

4.3 Data Retention ​

  • Account Data: Retained as long as your account is active
  • Chat History: Stored locally on your device until you delete the app or clear data
  • Logs: Server logs retained for 90 days for security and debugging purposes

5. Your Privacy Rights ​

5.1 Access and Correction ​

You can view and update your account information within the App settings.

5.2 Data Deletion ​

You have the right to request deletion of your account and associated data:

  • Local Data: Delete the app to remove locally stored chat history
  • Server Data: Contact us at admin@sxzhenghua.com to request account deletion

We will process deletion requests within 30 days, except for data we must retain for legal compliance.

5.3 Data Portability ​

You may request a copy of your personal data in a structured, machine-readable format.

5.4 Withdrawal of Consent ​

You may withdraw consent for data processing at any time by deleting your account, though this may limit app functionality.

6. Children's Privacy ​

The App is not intended for users under 13 years of age (or the applicable age of digital consent in your jurisdiction). We do not knowingly collect personal information from children. If you believe we have inadvertently collected such information, please contact us immediately.

7. International Data Transfers ​

Your information may be transferred to and processed in countries other than your country of residence. We ensure appropriate safeguards are in place to protect your information in accordance with this Privacy Policy.

8. Third-Party Services ​

8.1 Google Sign-In ​

Governed by Google's Privacy Policy: https://policies.google.com/privacy

8.2 Apple Sign-In ​

Governed by Apple's Privacy Policy: https://www.apple.com/legal/privacy/

8.3 RevenueCat (In-App Purchases) ​

Governed by RevenueCat's Privacy Policy: https://www.revenuecat.com/privacy

9. Changes to This Privacy Policy ​

We may update this Privacy Policy periodically. We will notify you of material changes by:

  • Posting the updated policy in the App
  • Displaying a prominent notice within the App
  • Sending an email notification (if you have provided an email address)

Continued use of the App after changes constitutes acceptance of the updated policy.

10. Data Protection Officer ​

For privacy-related inquiries or to exercise your rights, contact:

Email: admin@sxzhenghua.com
Company: Shaanxi Zhenghua Information Technology Co., Ltd.
Address: Xi'an Economic and Technological Development Zone, Shaanxi, China

11. Additional Information for EU/UK Users (GDPR) ​

If you are located in the European Economic Area (EEA) or United Kingdom:

Legal Basis for Processing

  • Consent: For chat content processing
  • Contractual Necessity: For authentication and service delivery
  • Legitimate Interests: For security and service improvement

Your Additional Rights

  • Right to object to processing
  • Right to restrict processing
  • Right to lodge a complaint with a supervisory authority

12. Additional Information for California Users (CCPA) ​

If you are a California resident, you have the right to:

  • Know what personal information we collect, use, and disclose
  • Request deletion of your personal information
  • Opt-out of the sale of personal information (we do not sell your information)
  • Non-discrimination for exercising your rights

To exercise these rights, contact: admin@sxzhenghua.com

13. Consent ​

By using the DeepSage App, you acknowledge that you have read and understood this Privacy Policy and agree to its terms.