Privacy Policy

1. How your data is processed

Data you paste into or load into the Site's data table, along with the charts and calculation results, are processed only inside your web browser. This data is never sent to or stored on the Company's servers and disappears when you close the browser window.

2. Information we collect

The Site has no sign-up and does not ask you to enter personal information such as your name or contact details. However, the following information may be generated and collected automatically while providing the service:

• Access logs: IP address, access time, requested page and browser type (logs of our servers and of our security/delivery services)
• Usage statistics: pages visited, time on page, referral source, device and browser type, approximate location (Google Analytics cookies)
• Advertising information: cookies and device identifiers used for ad impressions, clicks and interest estimation (Google AdSense)

3. Purposes of use

• Operating the Site, fixing errors, security and abuse prevention
• Improving the service through visitor statistics
• Showing advertisements to keep the service free

4. Cookies and advertising

The Site uses Google Analytics for visitor statistics and Google AdSense for advertising. These services collect information using cookies.

• Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this Site or other websites.
• Google's use of advertising cookies enables it and its partners to serve ads to you based on your visits to this Site and/or other sites on the Internet.
• You may opt out of personalized advertising in Google Ads Settings, and opt out of other third-party vendors' cookies for personalized advertising at www.aboutads.info.
• See How Google uses information from sites or apps that use its services for details.
• You can refuse or delete cookies in your browser settings. The chart tools keep working without cookies.

5. Retention period

Access logs are kept for 3 months as required by the Korean Protection of Communications Secrets Act and then deleted. Google Analytics data is kept according to its data retention setting (up to 14 months) and then deleted automatically.

6. Processors and international transfer

These companies operate servers abroad (including the United States), so access logs and cookie information may be transferred to and stored in those countries.

7. Your rights

You may request access to, correction, deletion or suspension of processing of your personal information at any time. Contact the privacy officer below by email and we will act on your request without delay.

8. Privacy officer

9. Changes to this policy

If this Privacy Policy is added to, removed from or changed, we will announce it on this page at least 7 days before the change takes effect.

Published: 2026-10-19 · Effective: 2026-10-19