Privacy Policy

Last Updated: May 8, 2026

日本語版 / Japanese version

Note: The Japanese version is the official text. In case of any discrepancy between the Japanese and English versions, the Japanese version shall prevail.

1. Business Operator Information

• Operator: Izuru Matsuura
• Service Name: MIDAS
• Contact: contact@midas-app.org

2. Basic Policy

The Service respects User privacy and strives to protect personal information. The Service operates in a browser, and User data is processed only within the User's device.

3. Collection of Personal Information

1. The Service does not collect the following personal information:
   • Contact information such as name, address, phone number, email address
   • Payment information such as credit card information
   • IP addresses
   • Other information that can identify Users
2. The Service collects the following access analytics information for the purposes of service improvement and operational stability. This information does not include session IDs, User dataset contents, file names, column names, names of features used, error message bodies, or stack traces.
   • Page views
   • Referrer URL
   • Country/region information
   • User-Agent string (browser and OS type, etc.)
   • Access date and time
   • The fact that the launcher view was shown
   • The fact that the project view was shown
   • The fact that the project view was hidden or closed, and the number of seconds it was visible
   • The fact that an unhandled JavaScript error was caught, and a token indicating the error type (e.g., TypeError, RangeError)
   • The application version
3. The information in the preceding paragraph is processed in a form that cannot identify individuals and is used only for statistical analysis or security response.

4. Data Processing and Storage

1. Files and project data loaded by Users in the Service are processed only within the User's browser and are not sent to the Provider's servers.
2. Files and project data uploaded by Users are stored only in the User's device local storage (IndexedDB/OPFS).
3. The Provider cannot access Users' files or project data.
4. The access analytics information described in Article 3, paragraph 2 is stored on Cloudflare's infrastructure and automatically deleted after a maximum of 6 months.

5. Use of External Services

1. The Service uses Cloudflare Web Analytics and Cloudflare Workers Analytics Engine, provided by Cloudflare, Inc., to collect and aggregate the access analytics information described in Article 3, paragraph 2.
2. These services collect information without using cookies.
3. The Service does not write personally identifiable information (such as names, email addresses, IP addresses, or session IDs) to these services.
4. Information collected is processed in accordance with Cloudflare, Inc.'s Privacy Policy. For details, please see:
   • Cloudflare Privacy Policy: https://www.cloudflare.com/privacypolicy/

6. Provision to Third Parties

1. Files and project data loaded by Users in the Service are processed only within the User's device and are not sent to the Provider's or third-party servers.
2. The access analytics information described in Article 3, paragraph 2 is provided to the services listed in Article 5, paragraph 1.
3. User information will not be provided to third parties for purposes other than those described in the preceding paragraph.

7. Data Security

1. Since User data is stored only within the User's device, data security depends on the User's device and browser security settings.
2. Users are responsible for appropriately protecting their devices and browsers.

8. Changes to This Policy

1. The Provider may change this Policy as necessary.
2. Changes to the Policy shall take effect upon publication on the Service.
3. If significant changes are made, the Provider may request renewed agreement to the Privacy Policy on the Service.

9. Contact

For inquiries regarding this Policy, please contact:

• Email address: contact@midas-app.org

Revision History

---

By using MIDAS, you acknowledge that you have read and understood this Privacy Policy.