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Terms of Service

Effective Date: March 13, 2026

Last Updated: March 13, 2026

1. Acceptance of Terms

By installing, accessing, or using the Clutio Chrome Extension ("the Extension", "the Service", "we", "us", or "our"), you ("you", "your", or "User") agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, you must immediately uninstall the Extension and discontinue all use.

Your continued use of the Extension after any modifications to these Terms constitutes acceptance of the revised Terms. We will provide notice of material changes as described in Section 12.

These Terms constitute a legally binding agreement between you and the developer of Clutio ("Developer").

2. Service Description

2.1 Overview

Clutio is a free Chrome browser extension (Manifest V3) that provides AI-powered language learning features. The Extension enables you to:

2.2 Local-Only Architecture

All user data is stored exclusively on your device using the browser's built-in storage mechanisms (IndexedDB and chrome.storage). We do not operate any servers, databases, or cloud infrastructure. We do not collect, store, transmit, or have access to your data.

2.3 Free Service

The Extension is provided free of charge. There are no subscription fees, in-app purchases, or premium tiers. However, you are solely responsible for any costs incurred through your use of third-party AI APIs (see Section 6).

3. User Accounts and API Keys

3.1 No Account Required

The Extension does not require account creation, registration, or login. There is no username, password, or profile associated with your use of the Extension.

3.2 API Keys

To use the AI translation features, you must obtain your own API key(s) from one or more supported third-party AI service providers (Anthropic, OpenAI, Google). You are responsible for:

3.3 No Key Sharing

You must not share, transfer, publish, or make publicly available your API keys in connection with the Extension. You must not use another person's API keys without their explicit authorization.

4. User Obligations and Acceptable Use

4.1 Compliance with Laws

You agree to use the Extension in compliance with all applicable local, state, national, and international laws, regulations, and ordinances.

4.2 Prohibited Conduct

You agree not to:

  1. Use the Extension for any unlawful, fraudulent, or malicious purpose.
  2. Use the Extension to infringe upon any third party's intellectual property rights, including copyrights, trademarks, patents, or trade secrets.
  3. Reverse engineer, decompile, disassemble, or otherwise attempt to derive the source code of the Extension, except to the extent that such activity is expressly permitted by the Extension's open-source license or by applicable law notwithstanding this limitation.
  4. Interfere with or disrupt the normal functioning of the Extension or any third-party AI service accessed through the Extension.
  5. Use the Extension for automated bulk requests, scraping, crawling, or any form of systematic data extraction.
  6. Intentionally generate, solicit, or disseminate illegal, harmful, discriminatory, abusive, defamatory, obscene, or otherwise objectionable content through the AI APIs.
  7. Use another person's API keys without authorization.
  8. Use the Extension in any manner that violates the terms of service of any third-party AI service provider.
  9. Attempt to circumvent any technical limitations or security measures of the Extension or third-party AI services.
  10. Use the Extension to engage in any activity that could harm minors.

4.3 Consequences of Violation

We reserve the right to take appropriate action in response to violations of these Terms, which may include restricting access to the Extension through Chrome Web Store mechanisms or pursuing legal remedies.

5. Intellectual Property

5.1 Extension Ownership

The Extension, including its software, design, logos, trademarks, service marks, icons, user interface, and user experience design, is owned by the Developer and is protected by applicable intellectual property laws. All rights not expressly granted in these Terms are reserved.

5.2 Open Source

Portions of the Extension's source code may be made available on GitHub (https://github.com/YouJaeBeom/clutio) under applicable open-source licenses. Your use of such source code is governed by the terms of the applicable open-source license, and nothing in these Terms restricts your rights under such licenses.

5.3 User-Generated Data

You retain all rights to the vocabulary data you create using the Extension (saved words, notes, and similar user-generated content). We claim no ownership of or rights to your data.

5.4 AI-Generated Content

The intellectual property rights in content generated by AI APIs (translations, definitions, example sentences, etc.) are subject to the terms of service of the respective AI service provider. We do not claim any rights to AI-generated content.

5.5 DMCA Compliance

We respect the intellectual property rights of others. If you believe that any content accessible through the Extension infringes your copyright, you may submit a notification pursuant to the Digital Millennium Copyright Act (DMCA) by providing the following information in writing to contact@clutio.com:

  1. A physical or electronic signature of the copyright owner or a person authorized to act on their behalf.
  2. Identification of the copyrighted work claimed to have been infringed.
  3. Identification of the material that is claimed to be infringing and information reasonably sufficient to locate the material.
  4. Your contact information, including address, telephone number, and email address.
  5. A statement that you have a good-faith belief that the use of the material is not authorized by the copyright owner, its agent, or the law.
  6. A statement, under penalty of perjury, that the information in the notification is accurate and that you are authorized to act on behalf of the copyright owner.

Please note: Because the Extension operates entirely locally on users' devices and we do not host or control user-generated content on any server, our ability to remove specific content is limited. We will, however, address any claims relating to the Extension's own code and materials.

6. Third-Party Services

6.1 AI API Providers

The Extension integrates with the following third-party AI services to provide translation functionality:

6.2 Data Transmission

When you use the translation feature, the following data is transmitted to your selected AI service provider via HTTPS-encrypted communication:

This transmission occurs only when you actively request a translation. No data is transmitted without your explicit action.

6.3 Third-Party Terms

Your use of third-party AI services is governed by the respective service provider's terms of service and privacy policy. You are solely responsible for reviewing and complying with those terms. We are not a party to any agreement between you and any third-party AI service provider.

6.4 No Endorsement

We do not endorse, warrant, or assume responsibility for any third-party AI service, its availability, performance, output accuracy, or compliance with applicable laws.

6.5 AI Output Disclaimer

Content generated by AI APIs (translations, definitions, example sentences, etc.) is produced automatically by machine learning models. Such content may be inaccurate, incomplete, misleading, biased, or otherwise flawed. You acknowledge that:

7. Disclaimer of Warranties

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW:

THE EXTENSION IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS, WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE. WE SPECIFICALLY DISCLAIM ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT.

WITHOUT LIMITING THE FOREGOING, WE MAKE NO WARRANTY THAT:

  1. The Extension will meet your requirements or expectations.
  2. The Extension will be uninterrupted, timely, secure, or error-free.
  3. The results obtained through the Extension (including AI-generated content) will be accurate, reliable, or complete.
  4. Any errors in the Extension will be corrected.
  5. The Extension will be compatible with any particular third-party software, hardware, browser version, or operating system.
  6. The Extension will function correctly on any particular webpage.

SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES, SO SOME OF THE ABOVE EXCLUSIONS MAY NOT APPLY TO YOU. IN SUCH JURISDICTIONS, OUR WARRANTIES ARE LIMITED TO THE MAXIMUM EXTENT PERMITTED BY LAW.

8. Limitation of Liability

8.1 Exclusion of Damages

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL THE DEVELOPER, OR ANY OF ITS AFFILIATES, LICENSORS, OR SERVICE PROVIDERS, BE LIABLE FOR:

  1. Any indirect, incidental, special, consequential, punitive, or exemplary damages.
  2. Any loss of profits, revenue, data, goodwill, or other intangible losses.
  3. Any damages arising from:
    • Your use of or inability to use the Extension.
    • Inaccuracy or inappropriateness of AI-generated content.
    • Failure, modification, interruption, or termination of third-party AI services.
    • Loss, theft, or unauthorized use of your API keys.
    • Device malfunction, data loss, or software conflicts.
    • Unauthorized access to or alteration of your data.
    • Any content or conduct of any third party accessed through the Extension.

8.2 Aggregate Liability Cap

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE DEVELOPER'S TOTAL AGGREGATE LIABILITY ARISING OUT OF OR RELATING TO THESE TERMS OR YOUR USE OF THE EXTENSION SHALL NOT EXCEED ZERO US DOLLARS (USD $0.00), AS THE EXTENSION IS PROVIDED FREE OF CHARGE AND NO MONETARY TRANSACTION OCCURS BETWEEN YOU AND THE DEVELOPER.

8.3 Exceptions

The limitations and exclusions in this Section 8 do not apply to liability arising from the Developer's willful misconduct or gross negligence, or to any liability that cannot be excluded or limited under applicable law (including, where applicable, liability for death or personal injury caused by negligence).

8.4 Jurisdictional Limitations

SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OR EXCLUSION OF LIABILITY FOR CERTAIN TYPES OF DAMAGES. IN SUCH JURISDICTIONS, OUR LIABILITY IS LIMITED TO THE MAXIMUM EXTENT PERMITTED BY LAW.

9. Indemnification

You agree to indemnify, defend, and hold harmless the Developer and its affiliates, officers, agents, and licensors from and against any and all claims, demands, actions, liabilities, damages, losses, costs, and expenses (including reasonable attorneys' fees and court costs) arising out of or relating to:

  1. Your use of the Extension.
  2. Your breach of these Terms.
  3. Your violation of any applicable law, regulation, or third-party right (including intellectual property rights).
  4. Your misuse of API keys (including unauthorized use, sharing, or failure to secure them).
  5. Your violation of any third-party AI service provider's terms of service.
  6. Any content you generate, transmit, or access through the Extension.
  7. Any dispute between you and any third-party AI service provider.

This indemnification obligation survives the termination of these Terms and your use of the Extension.

10. Service Changes and Termination

10.1 Changes to the Service

We reserve the right to modify, update, or discontinue any feature or aspect of the Extension at any time. We will provide reasonable notice of material changes through our website (https://clutio.com) and/or Extension updates.

10.2 Termination by You

You may terminate your use of the Extension at any time by uninstalling it from your browser. Upon uninstallation, Chrome automatically deletes all locally stored Extension data (IndexedDB and chrome.storage).

10.3 Termination by Us

We may suspend or terminate the availability of the Extension at any time, for any reason, including but not limited to:

10.4 Effect of Termination

Upon termination:

10.5 Service Discontinuation

If we permanently discontinue the Extension, we will provide at least 30 days' notice through our website.

11. Privacy

Your privacy is important to us. Our collection, use, and handling of information is described in our Privacy Policy, available at https://clutio.com.

Key privacy facts:

The Privacy Policy is incorporated into these Terms by reference. By using the Extension, you acknowledge that you have read and understood the Privacy Policy.

12. Changes to These Terms

12.1 Right to Modify

We reserve the right to modify these Terms at any time. When we make changes, we will update the "Last Updated" date at the top of this document.

12.2 Notice of Changes

We will provide notice of material changes through one or more of the following methods:

12.3 Acceptance of Changes

Your continued use of the Extension after the effective date of any revised Terms constitutes your acceptance of the changes. If you do not agree to the revised Terms, you must stop using the Extension and uninstall it.

13. Governing Law and Dispute Resolution

13.1 Governing Law

These Terms shall be governed by and construed in accordance with the laws of the Republic of Korea, without regard to its conflict of law provisions. For Users located outside the Republic of Korea, mandatory consumer protection laws of your jurisdiction may also apply to the extent they provide greater protection.

13.2 Informal Resolution

Before initiating any formal dispute resolution proceeding, you agree to first contact us at contact@clutio.com and attempt to resolve the dispute informally for at least 30 days.

13.3 Arbitration Agreement (International Users)

For Users located outside the Republic of Korea: Any dispute, controversy, or claim arising out of or relating to these Terms or the Extension that cannot be resolved informally shall be finally settled by binding arbitration administered by the Korean Commercial Arbitration Board (KCAB) under its International Arbitration Rules. The arbitration shall be conducted in English (or Korean, if mutually agreed). The seat of arbitration shall be Seoul, Republic of Korea. The arbitral award shall be final and binding and may be entered as a judgment in any court of competent jurisdiction.

13.4 Class Action Waiver

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, YOU AGREE THAT ANY DISPUTE RESOLUTION PROCEEDINGS WILL BE CONDUCTED ONLY ON AN INDIVIDUAL BASIS AND NOT IN A CLASS, CONSOLIDATED, OR REPRESENTATIVE ACTION. IF FOR ANY REASON A CLAIM PROCEEDS IN COURT RATHER THAN IN ARBITRATION, YOU WAIVE ANY RIGHT TO A JURY TRIAL.

13.5 Jurisdiction (Domestic Users in Korea)

For Users located in the Republic of Korea, any legal proceedings shall be filed in the court having jurisdiction under the Korean Civil Procedure Act. Consumer disputes may also be submitted to the Consumer Dispute Resolution Committee of the Korea Consumer Agency or the Electronic Commerce Mediation Committee as applicable.

13.6 Exceptions

Nothing in this Section prevents either party from seeking injunctive or other equitable relief from a court of competent jurisdiction to prevent the actual or threatened infringement, misappropriation, or violation of intellectual property rights or confidential information.

14. Severability

If any provision of these Terms is held by a court or arbitrator of competent jurisdiction to be invalid, illegal, or unenforceable, such provision shall be modified to the minimum extent necessary to make it valid, legal, and enforceable. If such modification is not possible, the provision shall be severed from these Terms. The invalidity or unenforceability of any provision shall not affect the validity or enforceability of the remaining provisions, which shall continue in full force and effect.

15. General Provisions

15.1 Entire Agreement

These Terms, together with the Privacy Policy, constitute the entire agreement between you and the Developer regarding your use of the Extension, and supersede all prior and contemporaneous understandings, agreements, representations, and warranties, both written and oral.

15.2 No Waiver

The failure of the Developer to exercise or enforce any right or provision of these Terms shall not constitute a waiver of such right or provision. Any waiver must be in writing and signed by the Developer.

15.3 Assignment

You may not assign or transfer your rights or obligations under these Terms without the prior written consent of the Developer. The Developer may assign its rights and obligations under these Terms without restriction.

15.4 Force Majeure

The Developer shall not be liable for any failure to perform or delay in performing any obligation under these Terms to the extent that such failure or delay is caused by circumstances beyond its reasonable control, including but not limited to natural disasters, war, terrorism, riots, labor disputes, government actions, internet or telecommunications failures, or actions of third-party service providers.

15.5 Notices

Any notices required or permitted under these Terms may be sent to us at contact@clutio.com. We may provide notices to you through the Extension, our website, or Chrome Web Store listing.

15.6 Headings

The section headings in these Terms are for convenience only and have no legal or contractual effect.

16. Contact Information

If you have any questions, concerns, or feedback about these Terms or the Extension:

17. Regulatory Compliance Notices

17.1 United States

The Extension is provided in compliance with applicable U.S. federal and state laws, including the Digital Millennium Copyright Act (DMCA), the Electronic Communications Privacy Act (ECPA), and applicable state consumer protection statutes.

17.2 European Union / European Economic Area

To the extent that EU consumer protection directives apply to your use of the Extension, nothing in these Terms limits your rights under mandatory EU consumer protection law, including Directive 2011/83/EU (Consumer Rights Directive) and Directive 93/13/EEC (Unfair Contract Terms Directive).

17.3 United Kingdom

For Users in the United Kingdom, these Terms are subject to the Consumer Rights Act 2015 and other applicable UK consumer protection legislation. Nothing in these Terms affects your statutory rights.

17.4 Republic of Korea

These Terms comply with the Act on the Regulation of Terms and Conditions, the Act on Consumer Protection in Electronic Commerce, and the Framework Act on Electronic Documents and Transactions of the Republic of Korea.

By installing or using Clutio, you acknowledge that you have read, understood, and agree to be bound by these Terms of Service.