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Terms of Use

Effective : 2026-10-26

Article 1 Purpose

These Terms of Service (the “Terms”) set forth the basic matters regarding the use of the LETR AI service (formerly LETR WORKS; the “Service”) provided by Twigfarm Co., Ltd. (the “Company”) through the website https://www.letr.ai (the “Website”). The Company provides AI-based content operation, translation, dubbing, subtitle generation, content assetization, and global content operation environments.

Article 2 Definitions

The terms used in these Terms are defined as follows:

  • Member: A person who has registered as a member by providing personal information to the Company.

  • Service Agreement: The contract entered into between the Company and the Member regarding the use of the Website.

  • Member ID (“ID”): A unique combination of letters and numbers assigned to each Member for identification and use of the Service.

  • Password: A combination of letters and numbers selected by the Member to verify that the Member matches the assigned ID and to protect the Member’s rights.

  • Service: All services provided by the Company through the Website.

  • Source File: The original file uploaded to the Website by the Member in the course of using the translation support tool.

  • Worker: A person who provides or uses translation services through the Website.

  • Content: Videos, documents, images, audio, captions, metadata, and other digital materials uploaded or generated by the Member.

  • Google User Data: Data received by the Company from Google API services (YouTube Data API and Google Drive) following the Member’s OAuth authorization. This includes profile information, channel and video metadata, file metadata and contents, and authentication tokens.

Article 3 Effect and Amendment of the Terms

  1. The Company shall post the contents of these Terms, the company name, representative’s name, business address, telephone number, email address, business registration number, and the personal information manager on the initial screen of the Service so that Members can easily find them.

  2. These Terms shall take effect through notice on the homepage or by email to Members.

  3. The Company may amend these Terms within the scope that does not violate relevant laws. When amending, the Company shall notify Members of the effective date and reasons for the amendment from seven (7) days before the effective date through email, SMS, or notices. Amendments unfavorable to users shall be notified thirty (30) days in advance with a before-and-after comparison.

  4. If a Member does not agree to the amended Terms, the Member may request withdrawal. If the Member does not explicitly express intent to withdraw consent, the Member shall be deemed to have agreed to the amended Terms.

  5. The Company is not liable for any user damage arising from not being aware of the amended Terms despite such notice.

Article 4 Interpretation of the Terms

Matters not specified in these Terms and the interpretation of these Terms shall be governed by the Content Industry Promotion Act, the Act on Consumer Protection in Electronic Commerce, the Act on the Regulation of Terms and Conditions, and other related laws and commercial customs.

Article 5 Conclusion of the Service Agreement

  1. The Service Agreement is concluded when a person who wishes to become a Member agrees to these Terms, applies for membership, and the Company accepts the application.

  2. Membership registration may be completed by linking a social account (Google / Naver / Kakao / Apple / Microsoft) to the Website.

  3. The Company may refuse or withhold acceptance of an application in any of the following cases:

    • a. When the applicant has used another person’s identity.

    • b. When the application contains false information or omits required fields.

    • c. When a minor applies for a service prohibited to minors.

    • d. When the applicant is under 14 years of age.

    • e. When the applicant has previously had membership suspended by the Company and is reapplying during the suspension period.

    • f. When the application otherwise violates applicable laws or Company guidelines.

Article 6 Privacy

The Company protects the personal information of Members. The detailed handling of personal information, including matters relating to collection, use, storage, transfer, and deletion, is set forth in the Company’s Privacy Policy, available at https://www.letr.ai/en/privacy. By agreeing to these Terms, the Member acknowledges that they have read and understood the Privacy Policy.

Article 7 Google API Services — Member Obligations and Limited Use Notice

  1. By using features of the Service that require connection to a Google account (YouTube Data API and Google Drive), the Member agrees to be bound by the following:

  2. The Company’s use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. In particular, the Company DOES NOT use Google User Data for any of the following:

    • a. Training, fine-tuning, or evaluating any artificial-intelligence or machine-learning model, including LETR AI’s proprietary translation, dubbing, or synthesis models.

    • b. Serving targeted, personalized, retargeted, or interest-based advertising.

    • c. Selling or licensing Google User Data to data brokers or information resellers.

    • d. Determining credit-worthiness or for lending purposes.

    • e. Building or enriching any database for purposes other than providing user-facing features the Member has explicitly requested.

  3. The Member may revoke the Company’s access to their Google account at any time at https://myaccount.google.com/permissions.

  4. Detailed disclosures regarding what Google User Data is collected, how it is used, stored, shared, retained, and deleted are set forth in the Company’s Privacy Policy, Article 5.

Article 8 Provision of Company Services

  1. The Company provides the following services to its Members:

    • Translation support service for uploaded source files:Users can create projects and utilize the service to upload source files for translation, assigning translation tasks to workers.

    • Any and all services provided to Members by the Company through additional development or partnership agreements with other companies.

  2. Unless the Company enters into a separate written agreement with the Member granting explicit rights to use the brand characteristics of the Company’s services, the Company will not grant the Member the right to use the Company’s or the Service’s name, trademark, service mark, logo, domain name, and other distinctive brand characteristics.

  3. The form, functionality, design, and other aspects of the services provided by the Company may be changed or discontinued as necessary. In this case, the Company will not notify Members of individual changes. However, in cases deemed disadvantageous to the Members, advance notice will be provided.

  4. The Company continuously strives to provide consistent and reliable services. However, in unavoidable circumstances such as urgent system maintenance and replacement, natural disasters, communication disruptions, or other inevitable reasons, the Service may be temporarily suspended. In such cases, the Company will provide advance or subsequent notice thereof.

Article 9 Member’s Obligations

  1. Members are responsible for managing their own ID and password and shall bear all responsibilities for any consequences arising from their own fault regarding their ID and password. Members must not allow third parties to use their ID and password. If a Member becomes aware that their IDis being used by a third party, they must promptly notify the Company and follow the Company’s instructions.

  2. Members shall not engage in the following activities when using the Service:

    • a. Identity theft, including the personal information, ID, password, and financial information of others.

    • b. Replicating, publishing, or providing to third parties the information obtained from the Service for purposes beyond the personal scope of the Member’s website usage, including commercial purposes or any other purposes.

    • c. Infringement upon the copyright or other intellectual property rights of the Company or third parties.

    • d. Damaging the honor of the Company or third parties, or interfering with business operations.

    • e. Publicizing or posting obscene or violent messages, images, audio, or other information that violates public decency.

    • f. Any other actions that violate laws.

  3. The services provided by the Company may only be used by the Member named therein, and permission, reproduction, transmission, or distribution to third parties is prohibited.

  4. Members may not engage in business activities using the Company’s services without prior approval from the Company, and the Company shall not be responsible for any consequences arising from such business activities. Members shall compensate the Company for any damages incurred from such business activities.

Article 10 Member’s Content-Related Responsibilities

  1. The Company may, without prior notice, make content uploaded by Members for translation services private, delete it, or refuse to publish it if it falls under any of the following categories:

    • a. Content that infringes upon the copyright or other rights of third parties.

    • b. Content that damages the honor or causes harm to others.

    • c. Content for commercial advertising purposes.

    • d. Content that violates the posting principles established by the Company.

    • e. Content that violates other relevant laws and regulations.

  2. If a Member fails to comply with relevant laws, these Terms, account policies, or posting guidelines, the Company reserves the right to review the Member’s actions. Based on the review results, the Company may issue warnings, restrict the use of the Service partially or entirely, or suspend the use of the Service temporarily or permanently.

Article 11 Translation Service and Copyright

  1. The Company’s translation service is designed to allow Members to upload, store, transmit, receive, or share source files that are the subject of their translations.

  2. In order for the Company to provide translation services to Members, the Company requires authorization to store, replicate, and translate the content requested by the Member. By requesting translation, the Member grants such authorization to the Company, and the Member must possess the necessary rights to grant such authorization.

  3. Members retain the rights to create derivative works based on the original content through the translation service.

  4. The Company provides the service on the assumption that Members have legitimate rights to use the original content files. If a Member infringes upon the intellectual property rights of a third party during the use of the translation service, the Member bears full legal responsibility.

  5. The user and the worker agree that the copyright of the translated version of the original content, which is the result of the work, is transferred from the worker to the user.

Article 12 Paid Services

  1. Users are free to use translation support tools within the character limit set by the Company and can choose to use paid services by selecting their desired plan based on the monthly usage. The usage and fees for each plan are presented on the Website and during the payment process.

  2. Paid services can be accessed through irregular or regular (monthly, yearly) automatic payment via credit card. Members must input and store payment information for subscription payments, and if using the regular automatic payment method, the service fee will be automatically charged on the scheduled payment date. However, if the payment for the service fee is not successfully processed on the scheduled payment date due to reasons such as expiration of the registered payment method, the paid service may be suspended.

  3. Paid service users may request payment cancellation from the Company within 7 days from the payment date if they have not used the paid service at all during the month. If the content of the service displayed differs from the advertised content or if it is not performed as agreed upon in the contract, users can request a refund within 30 days from the date they become aware of the discrepancy or within 3 months from the date of service usage.

  4. The Company will request the suspension or cancellation of payment to the payment provider within 3 business days from the date of receipt of the Member’s request for payment cancellation or refund, if there isa refund amount. Refunds will be made using the same payment method as the Member’s original payment.

Article 13 Notifications to Members

  1. The Company will notify Members of important information that they must know during Service usage through notices or electronic mail.

  2. The Company may send commercial electronic mails using Member information to Members who have agreed to receive such mails at the time of registration. If Members do not wish to receive such notifications, they may refuse to receive them at any time through the Service website or the internal settings page of the Service.

Article 14 Change and Termination of Use Contract

  1. When a Member wishes to terminate the Service Agreement, the Member must apply for termination to the Company online or through other methods.

  2. If a Member engages in actions corresponding to Article5, Paragraph 3 and Article 9, Paragraph 2 of these Terms, the Company may terminate the Service Agreement without prior notice, suspend the Service for a specified period, or restrict usage without notice.

Article 15 Changes to Personal Information

Members are responsible for promptly updating any changes to the personal information provided at the time of application. The Member bears responsibility for any consequences resulting from failure to update such information.

Article 16 Technical Requirements for Use of the Service

The Company must ensure that the following Service Usage Mandatory Specifications are met for normal Service operation. Even if the Member’s Service usage is restricted due to failure to meet the essential specifications below, the Member cannot raise objections to the Company for this reason.

  1. Computer (PC)

    • Operating System (OS): Windows, OSX, Linux, or any other OS compatible with web browsers.

    • Web Browsers: Internet Explorer 10.0 or above, Chrome, Safari, Firefox.

  2. Smartphone Operating System (OS): iOS, Android.

Article 17 Resolution of Disputes

If there are any matters not specified in these Terms or disputes regarding the interpretation of the Terms, Members may resolve them with the Company through the customer center. In cases where no agreement is reached, relevant laws and general customs shall apply.

Article 18 Resolution of Legal Disputes

In the event of a dispute arising from or related to this agreement, Korean law shall apply, and both the Company and the Member may file a lawsuit in the competent court under the Civil Procedure Act.

Article 19 Third-Party Site Information Usage

The hyperlinks to third-party websites and/or third-party content (including third-party modules and functionalities as described below) on this Website, including APIs or functionalities within the Website, are provided “as is” and accessed and used at your own risk. Third-party sites are generally beyond our control and have their own terms of use, including privacy policies that govern your rights and obligations regarding the use of third-party sites.

Article 20 Governing Law and Jurisdiction

This Website can be accessed from any country in the world, if technically feasible. All access to and use of the Website and its content, and these Terms, are governed by and construed in accordance with the laws of the Republic of Korea.

These Terms shall come into effect on October 26, 2026.

Previous Effective Date: May 11, 2026.