Privacy Policy

Last updated: May 15, 2026

1. Introduction

DHPXD Credits ("we", "us", or "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your personal information when you use the DHPXD Credits application.

2. Information We Collect

We collect the following types of information:

  • Account Information: Email address, display name, and profile picture when you register or sign in via Google.
  • Usage Data: Study schedules, completed Pomodoro sessions, personal settings (volume, theme, etc.).
  • Technical Data: Device information, browser type, and IP address to ensure security and improve performance.

3. How We Use Information

The information you provide is used to:

  • Provide and maintain Service features
  • Synchronize your study data across devices
  • Verify identity and secure accounts
  • Improve user experience and develop new features

We do not sell, share, or disclose your personal data to third parties for commercial purposes.

4. Data Storage and Security

Your data is securely stored on Supabase — a cloud platform that complies with international security standards (SOC 2 Type II, GDPR). We use TLS/HTTPS encryption for all data transmission and apply Row Level Security (RLS) to ensure each user only accesses their own data.

5. Google Sign-In (OAuth)

When you choose to sign in via Google, we receive the following information from Google: email address, display name, and profile picture. We do not have access to your Google password. OAuth data processing follows the Google Privacy Policy.

6. Cookies and Local Storage

We use session cookies and localStorage to:

  • Maintain your login status
  • Save Pomodoro timer state when the tab is closed or device sleeps
  • Remember interface settings (light/dark theme)

This data is only stored on your device and is not sent to third-party servers.

7. Your Rights

You have the right to:

  • Access: View the personal data we store about you
  • Edit: Update account information in settings
  • Delete: Request deletion of your account and all your data
  • Export: Request a copy of your data

To exercise any of these rights, contact us at [email protected].

8. Changes to Policy

We may update this privacy policy from time to time. Any significant changes will be notified via email or in-app notifications. Your continued use of the Service after changes means you accept the new policy.

9. Contact

If you have questions, concerns, or complaints about this privacy policy, please contact us:

© 2026 DHPXD System