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Terms of Service

Established: October 10, 2026

This English version is provided for convenience. If it differs from the Japanese version, the Japanese version prevails. View the Japanese version

These Terms of Service (these "Terms") set out the conditions for using the Office add-in "KoreDefo" (the "Service") provided by KoreDefo (the operator's name and address: disclosed without delay on request) ("we", "us" or "our"). By using the Service, the User is deemed to have agreed to these Terms.

Article 1 (Definitions)

Service
means the software and related services we provide under the name "KoreDefo". In addition to the add-in for Microsoft Excel provided at the time these Terms are concluded, it includes any other add-ins for Microsoft Office products (PowerPoint, etc.) that we provide in the future, and all websites, support and other services accompanying them.
Target File
means a file that the Service checks or corrects (an Excel workbook, a PowerPoint presentation, etc.).
Operating Environment
means the User's device and software environment on which the Service runs.
User
means an individual, corporation or organization that agrees to these Terms and uses the Service.
License Key
means a cryptographically signed character string issued by us that certifies the entitlement to use the Service and its expiration date.
Designated Device
means the one PC to which a given License Key is currently bound.
Personal plan
means a paid plan intended for use by one User.
Team plan
means a paid plan under which a corporation or organization contracts for three or more Members together.
Subscriber
means, under the Team plan, the corporation or organization that concludes the usage agreement with us and pays the fees.
Administrator
means a person designated by the Subscriber who has the authority to operate the management functions of the Team plan (including assigning License Keys to and revoking them from Members, and setting the check criteria).
Member
means, under the Team plan, an individual to whom the Administrator has assigned a License Key and who uses the Service.

Article 2 (License)

  1. Subject to compliance with these Terms, we grant the User a non-exclusive, non-transferable right to use the Service on one Designated Device per License Key.
  2. The User must not disclose, lend or transfer a License Key to any third party, and must not share one License Key among multiple persons.
  3. To change the Designated Device of a License Key (for example, when replacing a PC), the User shall use the switching function provided by the Service. Once the switch is made, the Service can no longer be used on the previous Designated Device.
  4. Under the Team plan, we issue the same number of License Keys as the number of users contracted by the Subscriber, and the Administrator assigns them to the individual Members. In this case as well, one License Key may be used only by one Member on one Designated Device.
  5. If an assignment needs to be cancelled because a Member leaves the organization, changes roles or for a similar reason, the Subscriber may, through an operation by the Administrator, invalidate that License Key and reassign it to another Member. The invalidation takes effect when that Member's Designated Device next performs a check of its entitlement to use the Service.
  6. The Subscriber and the Administrator are responsible for the Members' compliance with these Terms.
  7. When providing Members' email addresses to us, the Subscriber and the Administrator shall notify the Members and complete any other procedures required by law.

Article 3 (Free Trial)

  1. We provide a free trial only once per email address. The trial period is 30 days, starting from the date and time at which the License Key is issued upon the application for the trial.
  2. The trial period expires at the moment exactly 30 days have passed from the starting date and time set out in the preceding paragraph (for example, for an application made at 15:00 on April 1, at 15:00 on May 1).
  3. After the trial period expires, the functions of the Service automatically become unavailable. The User's Target Files and the settings made during the trial are not deleted, but the User cannot use the Service again unless the User newly obtains a License Key for a paid plan.
  4. There is no automatic transition from the trial to a paid plan and no automatic charge. Because no payment information is required at the time of the trial application, no charge will arise unless the User takes some action. To use a paid plan, the User must separately apply (complete the payment process) themselves, either before or after the trial period expires.

Article 4 (Fees and Payment)

  1. The fees for paid plans are the amounts we separately display on our website. The fee for the Personal plan is monthly or annual; the fee for the Team plan is the annual fee per Member multiplied by the number of contracted users.
  2. The minimum number of contracted users for the Team plan is three. The number of users may be increased at any time during the contract period, and the fee for the additional users is calculated on a pro rata (daily) basis.
  3. Payment of fees is made through the payment processor we designate (Stripe, Inc.). We do not hold the User's credit card information.
  4. Paid plans renew automatically. Unless the User completes the cancellation procedure, the plan is renewed on the same terms when the contract period expires.
  5. The User may complete the cancellation procedure at any time by the method we specify. Once the cancellation procedure is complete, subsequent automatic renewals stop.
  6. Fees already paid are not refunded, including on a pro rata (daily) or similar basis. Even after cancellation, the User may use the Service until the end of the period already paid for. However, this does not apply to a change from the Personal plan to the Team plan, or to an increase in the number of users under the Team plan; in those cases, the portion of the fees already paid for the plan before the change that corresponds to the unexpired period is applied toward the fee for the plan after the change. The amount so applied is calculated by the proration function provided by the payment processor.

Article 5 (Handling of Data)

  1. We do not obtain, transmit or store, in any form, the content the User creates or edits in Target Files (data, formatting, structure and any other contents of the file). The quality check and automatic correction functions of the Service run entirely locally on the User's PC.
  2. The information we obtain for license management is limited to email addresses, the status and expiration date of licenses, a random identifier used to identify the Designated Device, and other information necessary to provide the Service (for the Team plan, this includes the organization name, the email addresses of Administrators and Members, and usage status). It never includes the contents of Target Files. Details are set out in our Privacy Policy.

Article 6 (Prohibited Acts)

In using the Service, the User must not do any of the following:

Article 7 (Intellectual Property Rights)

All copyrights, trademark rights and other intellectual property rights relating to the Service belong to us or the legitimate rights holders. These Terms grant a right to use the Service and do not transfer any of these rights to the User.

Article 8 (No Warranty)

The Service is provided as is. We make no warranty of any kind, whether express or implied, that the Service is fit for a particular purpose, that it will produce the expected results, or as to the accuracy or completeness of its content.

Article 9 (Disclaimer)

Except in cases of our willful misconduct or gross negligence, we bear no liability for any damage suffered by the User (including lost profits, loss of data and business interruption) arising from the use of, or inability to use, the Service. Even where we are liable for damages, the amount of compensation is capped at an amount equal to one month of the usage fees paid to us by the relevant User or Subscriber (for annual billing, the annual fee divided by 12). For damage arising during the free trial period, the amount of compensation is zero.

Article 10 (Force Majeure)

We are not liable for any failure to provide all or part of the Service due to natural disasters, fire, epidemics, failures of telecommunications lines, electric power or other infrastructure, failures of third-party services in which we are not involved (payment processors, cloud infrastructure providers, etc.), or any other cause beyond our reasonable control.

Article 11 (Termination of Agreement)

If the User violates any provision of these Terms, we may, without prior notice, invalidate the License Key and suspend the User's use of the Service.

Article 12 (Exclusion of Anti-Social Forces)

The User represents that neither the User (nor, in the case of a corporation, its representatives or officers) is an organized crime group (boryokudan), a member of an organized crime group, a company affiliated with an organized crime group, or any other anti-social force, and covenants that this will remain the case in the future. If it is found that the User has violated this Article, we may terminate the usage agreement for the Service without prior demand.

Article 13 (Method of Notice)

Notices from us to the User are given by email to the email address registered by the User, or by posting on our website. Notices from the User to us shall be given through the contact form.

Article 14 (Changes to these Terms)

We may change these Terms when we consider it necessary. The changed Terms take effect from the date they are posted on our website. If the User cannot agree to the changed Terms, the User may complete the cancellation procedure within one month of the posting date, and in that case the Terms before the change apply to the User's use of the Service during that period.

Article 15 (Severability)

Even if any provision of these Terms is held invalid or unenforceable under laws or regulations, the remaining provisions of these Terms, other than the invalid or unenforceable part, continue in full force and effect.

Article 16 (Entire Agreement)

These Terms constitute the entire agreement between us and the User regarding the use of the Service, and supersede any prior oral or written agreements or representations between the parties regarding the matters set out in these Terms.

Article 17 (Transfer of Business)

If we transfer the business relating to the Service to a third party (including a corporation established by us; the same applies below) (including not only a business transfer but also a company split and any other case in which the business is transferred), we may, in connection with that transfer, assign to that third party our contractual position under these Terms, our rights and obligations under these Terms, and the User's registration information and other information. The User hereby consents in advance to such assignment.

Article 18 (Governing Law and Jurisdiction)

These Terms are governed by the laws of Japan. For any dispute arising between us and the User in connection with the Service, the district court having jurisdiction over the location of our head office (or, while we operate as a sole proprietor, over our place of domicile) shall be the court of exclusive agreed jurisdiction for the first instance.

Article 19 (Contact)

For inquiries about these Terms, contact us through the contact form.