Privacy Policy

Last Updated: January 1, 2026

1. Introduction

D4U Wallet ("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 and related services (collectively, the "Service").

Please read this Privacy Policy carefully. By using the Service, you agree to the collection and use of information in accordance with this policy.

2. Information We Collect

2.1 Information You Provide

  • Account information (email address, if provided for notifications)
  • Transaction preferences and settings
  • Customer support communications

2.2 Automatically Collected Information

  • Device information (device type, operating system, unique device identifiers)
  • Usage data (features used, interaction patterns)
  • Log data (access times, pages viewed, app crashes)

2.3 Blockchain Data

We analyze publicly available blockchain data to provide risk detection and security features. This includes transaction histories, address associations, and risk scoring from third-party blockchain analytics providers.

3. Non-Custodial Nature

D4U Wallet is a non-custodial wallet. This means:

  • Your private keys are stored only on your device
  • We never have access to your private keys or seed phrases
  • We cannot access, freeze, or control your funds
  • We cannot recover your wallet if you lose your private keys
  • You are solely responsible for the security of your wallet credentials

4. How We Use Your Information

We use the collected information for:

  • Providing and maintaining the Service
  • Risk detection and security analysis
  • Improving user experience and Service functionality
  • Sending notifications (if enabled)
  • Responding to customer support requests
  • Complying with legal obligations

5. Data Sharing and Disclosure

We may share your information with:

  • Service Providers: Third-party companies that assist in providing the Service (analytics, infrastructure)
  • Blockchain Analytics: Partners who provide risk scoring and address analysis
  • Legal Requirements: When required by law or to protect our rights

We do not sell your personal information to third parties.

6. Data Security

We implement appropriate technical and organizational measures to protect your information, including encryption, secure data transmission, and access controls. However, no method of transmission over the Internet is 100% secure, and we cannot guarantee absolute security.

7. Your Rights (GDPR/CCPA)

Depending on your location, you may have the right to:

  • Access the personal information we hold about you
  • Request correction of inaccurate information
  • Request deletion of your personal information
  • Object to or restrict certain processing
  • Data portability
  • Withdraw consent at any time

To exercise these rights, please contact us at privacy@d4upay.com.

8. Data Retention

We retain your information only for as long as necessary to fulfill the purposes outlined in this Privacy Policy, unless a longer retention period is required by law. Usage data is typically retained for a shorter period, except when used to strengthen security or improve the Service.

9. Children's Privacy

The Service is not intended for users under the age of 18. We do not knowingly collect personal information from children. If you become aware that a child has provided us with personal information, please contact us immediately.

10. 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 Privacy Policy on this page and updating the "Last Updated" date. You are advised to review this Privacy Policy periodically for any changes.

11. Contact Us

If you have any questions about this Privacy Policy, please contact us: