This page is the same version of the Terms of Service shown in the app on first launch (2026-10-19).

Terms of Service

Version: 2026-10-19

Welcome to Lyrune (月晤, "the app"). The app is developed and provided by Limburgite Inc. ("we"). These terms are the agreement between you and us about using the app. Please read them carefully, especially the parts in bold. Checking the box means you accept these terms. You agree to these terms separately from the Privacy Policy.

1. What the app provides

• The app offers companionship through chatting with AI, including AI friends, AI Q&A, personas that imitate how someone talks based on material you provide, letters, optional proactive messages from friends, voice and image input, optional AI voice replies, and a local media player.
• Everyone you chat with is an AI, not a real person. The AI has no real feelings or body.
• A persona is only an AI that imitates someone's way of talking. It is not that person and cannot speak for them, forgive on their behalf, or make new promises.
• AI voice replies use a generic voice synthesized on your device. It is not a recording of any real person and not a clone of any specific person's voice, and it does not imitate the person a persona is based on. The app does not offer voice cloning. Each clip starts by saying it was generated by artificial intelligence.
• AI replies are generated automatically and may be inaccurate, incomplete, or inappropriate. They do not represent our views. Use your own judgment for anything important and check with people you trust or with professionals.

2. Not a medical service

The app does not provide diagnosis, treatment, counseling, or any medical service, and is not a substitute for professional help. If you or someone else is in danger, call your local emergency number right away, or use a line listed on the in-app Help page.

3. Who can use the app

• You must be at least 18 years old.
• If there are signs during use that you may be under 18, the app pauses the service. You can appeal by following the on-screen steps.

4. No account; your data stays on your device

• The app does not require an account. Your chats, AI friends, personas, memories, and other content are stored encrypted on your device.
• Uninstalling the app, clearing its data, or losing your device will lose this content, and we cannot recover it. To keep it, export it first from Settings.
• You are responsible for keeping your device and any exported files safe.

5. On-device and online models

• By default the app uses AI models that run on your device, so conversations do not leave it. On-device models use storage, memory, and battery, and your device may get warm while they run. Speed and the usable context length vary by device.
• Online models are optional. They are turned on only after you choose a provider, enter your own API key, and agree in a separate confirmation. Once on, conversation content is sent to the provider you chose. Your relationship with that provider, including any fees, is governed by its own terms and is your responsibility. You can disconnect at any time and switch back to the on-device model.

6. Safety features

• For your safety, the app looks for risk signals in conversations on your device. When it finds one, it shows help information and may pause a persona or companion role so that a basic companion AI talks with you instead. Detection can be wrong.
• Help information shows hotlines and emergency numbers for the country or region you chose. This content is fixed and not generated by AI.
• An emergency contact is optional and is stored only on your device. The app never contacts anyone automatically. It opens your phone's dialer to call that person only after you tap and confirm it yourself.
• AI replies go through content review, and inappropriate replies are replaced with a safe reply.
• The app contains developer debugging settings that require a PIN. Ordinary use does not need them and they should not be turned on. Debugging settings can turn off some content review, and whoever turns them on bears the resulting risk.

7. Acceptable use

You may not use the app to:

• break the law, or create or spread content that is illegal, sexual, violent, hateful, or harmful to others;
• harass, threaten, or defraud anyone, or impersonate someone to deceive others;
• present saved AI voice audio as a real person's recording, or remove its AI notice to mislead others;
• infringe anyone's privacy, personal information, likeness, copyright, or other rights.

8. Personas and imported content

• Before importing chat history or other material, make sure you have the right to use it. If it involves a living person, get their consent first.
• When importing, the app automatically removes phone numbers, ID numbers, bank card numbers, street addresses, and similar details on your device, but it cannot guarantee it finds every piece of sensitive information. Please review the material yourself before importing.
• Personas are for your own use only and cannot be shared or exported to others.

9. Your content

• Content you type, import, photograph, or record belongs to you. It is used only on your device to provide the app's features.
• We do not use your content to train any model or to show or tailor ads.

10. Media player and online content

• The player plays only local files you choose or web addresses you enter. Make sure you have the right to play and share that content.
• When you open a web address, your device connects directly to that server, which can see connection details such as your IP address.

11. Leaving and usage time

You can end a conversation at any time and the AI will not try to make you stay. After you leave, we do not send messages to pull you back. After long continuous use, the app reminds you to take a break.

12. Reports and feedback

You can long-press any AI message to report it, or submit a complaint in Settings. Reports and complaints are currently saved on your device. If you want us to act on something, contact us as described in section 18.

13. Intellectual property and open-source components

• Rights in the app's name, icon, interface design, and software (excluding third-party components) belong to Limburgite Inc..
• The app uses third-party open-source software, fonts, and models, including the MiniCPM models, llama.cpp, sherpa-onnx, the SenseVoice speech recognition model, the MeloTTS speech synthesis model, PDFium (for reading text from PDF files), and the Inter font. Each is subject to its own license; see the license information in the app.

14. Free service, changes, and discontinuation

• The app is currently provided free of charge.
• We may update, change, or discontinue some or all features. Before discontinuing the service, we will try to give advance notice in the app or on the project page and remind you to export your data.

15. Limitation of liability

• The app is provided "as is". To the maximum extent permitted by applicable law, we do not promise that the app will be uninterrupted or error-free, or that AI replies will be accurate or suitable for your particular purpose.
• To the maximum extent permitted by applicable law, we are not liable for indirect, incidental, or consequential losses, including data loss, arising from using or being unable to use the app.
• Nothing here excludes or limits liability that cannot be excluded or limited by law, including for harm caused intentionally or by gross negligence, and nothing affects mandatory consumer rights under the law where you live.

16. Termination

You may stop using the app, delete all data, or uninstall it at any time. If you seriously breach these terms, we may stop providing you with further updates or support.

17. Governing law and disputes

These terms are governed by the laws of the Province of Ontario and the federal laws of Canada applicable there. This does not affect rights you have under mandatory consumer protection laws in your country or region. If a dispute arises, please contact us first as described in section 18, and we will try to resolve it together.

18. Changes to these terms and contact

• If these terms change in an important way, the app will show the new version and ask you to confirm again.
• Contact: hello@limburgite.com (developer: Limburgite Inc.).