Privacy Policy

Last updated: May 22, 2026

1. Introduction

This Privacy Policy explains how this application (the “Ishihara Color Blind Test App”) handles user information.

The App is a Progressive Web App (PWA) that functions as a static website and does not actively collect, store, or transmit personal data.

2. Data Collection

The App does not collect any personal information such as:

Names
Email addresses
Phone numbers
Location data
Account information

The App does not provide forms, account registration, or user tracking mechanisms.

3. Cookies and Local Storage

The App may use standard browser technologies such as:

Local storage
Service workers

These are used solely to:

Enable basic functionality (e.g., offline access)
Improve loading performance

No data stored through these technologies is transmitted to any server or third party.

4. Third-Party Services

The App does not use third-party analytics, advertising, or tracking services.

If this changes in the future, this Privacy Policy will be updated accordingly.

5. Data Sharing

Because the App does not collect personal data, no personal data is shared with any third parties.

6. Security

Since no personal data is collected or stored, there is minimal risk to user privacy. Standard web security practices are followed to ensure the integrity of the App.

7. Children’s Privacy

The App does not knowingly collect or process data from anyone, including children under the age of 13.

8. Changes to This Policy

This Privacy Policy may be updated from time to time. Updates will be reflected by revising the “Last updated” date.