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Terms of Service

These Terms of Service (“Terms”) govern your use of the Hypnoter browser extension and the hypnoter.app website (collectively, the “Service”). By installing or using Hypnoter, you agree to be bound by these Terms. If you do not agree, please do not use the Service.

1. Description of Service

Hypnoter is a free, open-source browser extension that provides note-taking functionality within your browser’s sidebar. The extension includes features such as a rich text editor, AI-assisted writing, speech-to-text, OCR, diagram creation, and optional integrations with Google Drive and Google Calendar. Hypnoter operates primarily offline, storing data locally in your browser.

2. License

The Hypnoter extension source code is released under the MIT License. You are free to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the software, subject to the conditions of the MIT License.

These Terms of Service govern your use of the Service (the extension and website). The MIT License governs the source code. Both apply simultaneously.

3. User Accounts

Hypnoter does not require any user account or registration. All features are available without sign-up. If you choose to enable optional Google integrations (Drive, Calendar, Gemini AI), you authenticate directly with Google — Hypnoter does not create or manage user accounts.

4. User Content

4.1 Ownership

You retain full ownership of all content you create using Hypnoter, including notes, images, and any other materials. Hypnoter claims no intellectual property rights over your content.

4.2 Storage

Your content is stored locally in your browser’s IndexedDB. Hypnoter does not have access to your content on any server. If you enable Google Drive sync, your content is also stored in your Google Drive account, subject to Google’s Terms of Service.

4.3 Responsibility

You are solely responsible for:

  • The content you create and store using Hypnoter.
  • Maintaining backups of your important data. While Hypnoter provides export functionality, data stored in browser storage can be lost if you clear browser data, uninstall the extension, or experience browser issues.
  • Ensuring your use of the extension complies with applicable laws and regulations.

5. Acceptable Use

You agree not to use Hypnoter to:

  • Violate any applicable law or regulation.
  • Store or distribute content that infringes on intellectual property rights of others.
  • Attempt to exploit security vulnerabilities in the extension, browser, or connected services.
  • Use the extension in any way that could damage, disable, or impair the functioning of the extension or connected third-party services.

6. Third-Party Services

Hypnoter integrates with optional third-party services. Your use of these services is subject to their respective terms:

Hypnoter is not responsible for the availability, accuracy, or functionality of third-party services. Changes to third-party APIs or terms may affect Hypnoter’s optional features.

7. Intellectual Property

The Hypnoter name, logo, and branding are the property of the Hypnoter project. The source code is licensed under the MIT License. All third-party libraries used by Hypnoter are subject to their respective open-source licenses, which are listed in the project’s repository.

8. Disclaimer of Warranties

THE SERVICE IS PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

WITHOUT LIMITING THE FOREGOING, THE DEVELOPERS DO NOT WARRANT THAT:

  • The Service will meet your specific requirements.
  • The Service will be uninterrupted, timely, secure, or error-free.
  • The results obtained from the use of the Service will be accurate or reliable.
  • Any errors in the software will be corrected.
  • Data stored locally will persist indefinitely — browser updates, storage clearing, or extension updates may affect stored data.

9. Limitation of Liability

IN NO EVENT SHALL THE DEVELOPERS, CONTRIBUTORS, OR COPYRIGHT HOLDERS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING WITHOUT LIMITATION:

  • Loss of data, notes, or content.
  • Loss of profits or business opportunities.
  • Business interruption.
  • Loss of goodwill.
  • Any damages arising from the use or inability to use the Service.

THIS LIMITATION APPLIES WHETHER THE ALLEGED LIABILITY IS BASED ON CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY, OR ANY OTHER BASIS, EVEN IF THE DEVELOPERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS LIMITATION MAY NOT APPLY TO YOU.

10. Indemnification

You agree to defend, indemnify, and hold harmless the Hypnoter project, its developers, and contributors from and against any claims, damages, obligations, losses, liabilities, costs, or expenses (including attorney’s fees) arising from:

  • Your use of the Service.
  • Your violation of these Terms.
  • Your violation of any third-party rights.
  • Content you create or store using the Service.

11. Termination

  • By you: You may stop using Hypnoter at any time by uninstalling the extension. Upon uninstallation, locally stored data is removed by the browser.
  • By us: We reserve the right to discontinue the Service or any of its features at any time, with or without notice. As an open-source project, the source code remains available under the MIT License regardless.

Termination does not affect any rights or obligations that accrued before termination.

12. Open Source Contributions

If you contribute to Hypnoter (via pull requests, issues, or other means), your contributions are subject to the project’s MIT License and the Contributing Guidelines. By contributing, you confirm that you have the right to grant the license and that your contributions do not infringe on any third-party rights.

13. Governing Law

These Terms shall be governed by and construed in accordance with applicable law, without regard to conflict of law principles. Any disputes arising under these Terms shall be resolved in the courts of competent jurisdiction.

14. Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision shall be limited or eliminated to the minimum extent necessary so that the remaining Terms remain in full force and effect.

15. Entire Agreement

These Terms, together with the Privacy Policy, constitute the entire agreement between you and Hypnoter regarding the use of the Service. These Terms supersede any prior agreements or understandings.

16. Changes to These Terms

We may update these Terms from time to time. Changes will be posted on this page with an updated “Last updated” date. Continued use of the Service after changes constitutes acceptance of the revised Terms. For significant changes, we will update the extension’s changelog.

17. Contact Us

If you have questions about these Terms: