Privacy Policy

Effective date: November 13, 2026 · 한국어

Fill the Map ("the Service") values your privacy and complies with the Personal Information Protection Act of Korea and related laws. This policy explains what information the Service collects and how it is used and kept.

1. Information we collect

You can use the Service without signing up or signing in. The Service does not ask for information that identifies you directly, such as your name, email address or phone number.

The following may be collected automatically while you use the Service:

  • Access logs, device and browser information, and usage statistics through cookies and similar technologies (Google Analytics)
  • Statistics about study activity: screens opened, whether answers were right or wrong and whether a hint was used, lessons finished, and test scores and times. These statistics contain no information that identifies you.

2. Information stored only on your device

The following is stored only in your browser's storage (localStorage) and is never sent to a server. The operator of the Service cannot see it.

  • Study records: how well you know each place and when it is next due for review
  • Progress in an unfinished lesson, review or full practice
  • How many places you studied today and the region you studied last
  • Your best test result for each region
  • Settings (moving to the next question by itself after a correct answer)

Clearing your browser's site data deletes this information. Each browser keeps its own storage, so your records do not carry over to another browser or device.

3. Purposes of use

  • Showing your study records and scheduling reviews (on your device)
  • Analyzing usage statistics and improving the Service
  • Showing ads (on some article pages)

4. Retention period

  • Information stored on your device: kept in your browser until you delete it.
  • Google Analytics usage statistics: deleted automatically after up to 14 months.

5. Information kept from the former ranking feature

An earlier version of the Service asked users to sign in with Google or Kakao for its leaderboard. The Service no longer runs sign-in or the leaderboard and no longer collects this information. For users who signed in back then, the following is kept in Supabase:

  • Account identifier (user ID), email address (Google sign-in), profile name or nickname
  • Leaderboard nickname, game scores, number of plays

We delete this information without delay when you ask us to at the contact below. If the leaderboard comes back, we will update this policy first.

6. Service providers

The Service uses the following external services, which may process some information:

  • GitHub Pages: website hosting (access logs may be processed)
  • Google Analytics: usage statistics
  • Google AdSense: advertising (after approval, only on article pages, never on study screens)
  • Supabase: keeping the former ranking information (section 5)

7. Ads and cookies

The Service uses cookies and similar technologies for usage statistics (Google Analytics) and advertising (Google AdSense). Ads appear only on article pages such as study guides, never on study screens. Third-party vendors, including Google, may use cookies to serve ads based on your previous visits.

  • Google's use of advertising cookies enables it to serve interest-based ads.
  • You can turn off personalized ads in Google Ads Settings.
  • For more about how third-party vendors use cookies, see Google's advertising policies.
  • You can refuse or delete cookies in your browser settings.

8. Your rights

You can delete the study records on your device at any time by clearing your browser's site data. For the former ranking information in section 5, you can ask to see, correct or delete it at the contact below.

9. Contact

For privacy questions, please contact:

  • Email: koquiz.support@gmail.com

10. Changes to this policy

This policy may change with laws or the Service. Changes will be announced on this page. The previous policy took effect on July 31, 2026.