gugudan

Terms of Use

Effective date: June 24, 2026 · Operator: Semolab (세모연구소)

Note — draft: These terms are a draft prepared for gugudan's planned United States launch and are still under legal review. Items marked [TBD — confirm with counsel] are not yet final. We will update this page as that review completes.

1. Purpose

These terms govern the rights, obligations, and responsibilities between Semolab (세모연구소) (the "Company") and users in connection with the use of "gugudan" (the "Service").

2. Definitions

  • "Service" means the multiplication-tables learning and voice-grading app provided by the Company.
  • "User" means anyone who uses the Service under these terms, including a child and that child's parent or legal guardian.
  • "Voice grading" means the optional feature that converts a child's spoken answer to text to indicate whether it is correct.

3. Effect and changes

  • These terms take effect when posted in the app or on this website.
  • The Company may amend these terms within the limits of applicable law, and will give notice at least 7 days before the effective date of a change.

4. The Service

The Company provides:

  • Multiplication-tables practice and quizzes with instant grading;
  • (optional) voice grading that converts a child's spoken answer to text for grading.

The Service has no sign-up and does not store users' personal information on a company server. The Service is currently provided free of charge.

5. The voice feature and consent

  • Voice grading is optional; without it, all features remain available through keyboard input.
  • When voice grading is on, the child's spoken answer is sent abroad (to the United States) for conversion to text. This feature operates only with the consent of a parent or legal guardian; details are set out in the Privacy Policy.
  • The spoken answer is deleted immediately after conversion and is not retained.

6. Limits and disclaimer of the voice feature

  • Voice recognition and grading are a learning aid, and errors may occur during recognition or grading.
  • The Company does not guarantee the accuracy or completeness of grading results; the final judgment about a child's learning rests with the parent or guardian.
  • The Company is not liable for damage caused by grading errors except in cases of the Company's intent or gross negligence.

7. User obligations

Users must not:

  • reverse-engineer the Service, or collect from or misuse it through automated means;
  • place abnormal load on, or circumvent or abuse, the relay server;
  • violate applicable law or these terms.

8. Payment

The Service is currently free. If paid features are introduced, they will apply only after a separate notice and consent process.

9. Changes to and suspension of the Service

The Company may change or suspend all or part of the Service as needed for operational or technical reasons, with prior notice (or notice afterward in urgent cases).

10. Liability and disclaimer

  • The Company is not liable for damage arising from causes for which it is not responsible, such as force majeure, the user's fault, or the nature of a free service.
  • Matters not provided for in these terms are governed by applicable law and common practice.

11. Governing law and disputes

These terms are interpreted under the laws of the Republic of Korea, and disputes relating to use of the Service are brought before the court having jurisdiction under the Civil Procedure Act [TBD — confirm with counsel: governing law / forum for users outside Korea].

12. Contact

Semolab (세모연구소) · hello@gugudan.app