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Privacy Policy

Effective Date: December 8, 2025

1. Introduction

YEN ("we", "us", "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard information when you use the YEN Terminal application ("YEN", "the Application") and our website at yen.chat ("the Website").

YEN is designed with privacy as a core principle. We minimize data collection and process data locally on your device whenever possible.

2. Information We Do NOT Collect

YEN Terminal is a local application. We do not collect:

  • Terminal command history or output
  • File contents accessed through the terminal
  • Keystrokes or input data
  • Screen recordings or screenshots
  • Personal files or documents
  • System information beyond what is needed for updates
  • Location data
  • Contacts or address book information

3. Information We Collect

3.1 Application (YEN Terminal)

YEN Terminal collects minimal information for core functionality:

  • Version Check: When checking for updates, YEN contacts our servers to retrieve the current version number. This request includes your IP address (standard for any internet request) but no identifying information.
  • Configuration: Your settings are stored locally in ~/Library/Application Support/com.yenchat.yen/config.yen. This file never leaves your device.

3.2 Website (yen.chat)

When you visit our website, we may collect:

  • Standard Log Data: IP address, browser type, pages visited, and referring URL. This is collected automatically by our hosting provider (Vercel) for security and performance purposes.
  • Analytics: We may use privacy-respecting analytics to understand website usage patterns. We do not use tracking cookies or cross-site tracking.

4. How We Use Information

The limited information we collect is used to:

  • Provide update notifications for YEN Terminal
  • Maintain and improve website performance and security
  • Understand aggregate usage patterns (not individual users)
  • Respond to support requests if you contact us

5. Data Storage and Security

Your YEN configuration and terminal data remain on your local device. We do not operate servers that store user data beyond:

  • Static files served from our CDN (Vercel) for downloads and documentation
  • Version information for update checks (no user identification)
  • Standard web server logs retained by our hosting provider

We implement appropriate technical measures to protect the information we do process, including HTTPS encryption for all web traffic.

6. Third-Party Services

We use the following third-party services to operate YEN:

For a complete list of third-party services, see our Subprocessors page.

7. Cookies and Tracking

YEN Terminal: Does not use cookies or any form of tracking.

Website: Our website uses only essential cookies required for basic functionality (such as security tokens). We do not use:

  • Advertising cookies
  • Cross-site tracking
  • Social media tracking pixels
  • Third-party analytics that identify individuals

8. Children's Privacy

YEN is not directed at children under 13 years of age. We do not knowingly collect personal information from children under 13. If you believe we have inadvertently collected such information, please contact us so we can delete it.

9. Your Rights

Depending on your location, you may have certain rights regarding your personal information:

  • Access: Request information about data we have about you (which is minimal)
  • Deletion: Request deletion of any personal data we may have
  • Opt-out: Disable update checks in YEN settings to prevent any server contact
  • Data Portability: Your configuration is already stored locally in a readable text format

To exercise these rights, contact us using the information below.

10. International Users

YEN is developed in the United States. If you access our website from outside the United States, your information may be transferred to, stored, and processed in the United States or other countries where our service providers operate. By using YEN, you consent to this transfer. We ensure appropriate safeguards are in place for any international data transfers.

11. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify users of significant changes by updating the "Effective Date" at the top of this page. Your continued use of YEN after changes constitutes acceptance of the updated policy.

12. Contact Us

If you have questions or concerns about this Privacy Policy or our data practices, please contact us: