Rabbit Lingo Terms of Service

Version 2　　Last updated: 2026-10-26　　Effective: 2026-10-26

Welcome to Rabbit Lingo (the "App"). These Terms are an agreement between you and Mossbun Labs, the operator of the App ("we", "us"), governing your use of the App. Please read them carefully before using the App, in particular the provisions in bold that exclude or limit our liability and the provisions on governing law and disputes. By tapping "Agree" you confirm that you have read and accept these Terms. If you do not agree, you may choose "Browse only" or stop using the App.

1. The service

• 1.The App is an English-learning tool that offers importing reading materials, word lookup, saving items, recognition and production practice, learning reports and cross-device sync. Some features use artificial intelligence ("AI").
• 2.The App offers a free version and a paid Pro subscription. The features and AI allowance of each are as described in the App. We may change the service as the business develops and will inform you in an appropriate way.

2. Account

• 1.You may use the basic features of the App on a single device without an account. To use sync, hosted AI and subscriptions, you need to sign in with your email address or a supported third-party account.
• 2.You are responsible for keeping your account and sign-in credentials secure and for activity under your account. Please contact us promptly if you notice unauthorized use.
• 3.You may delete your account at any time in Settings › Account. Your cloud data will then be deleted as described in the Privacy Policy and cannot be recovered.

3. Paid services

• 1.Pro is billed monthly or yearly at the price shown on the purchase page. On Android, subscriptions are purchased and managed through Google Play; on Windows, through the Microsoft Store.
• 2.Subscriptions renew automatically at the end of each period and you will be charged unless you cancel before the current period ends. We will remind you prominently before you are charged. You may cancel automatic renewal at any time in Google Play or the Microsoft Store; the current paid period remains valid until it ends.
• 3.New users may receive one free Pro trial. When the trial ends, the account returns to the free version without any charge.
• 4.Refunds are handled under the refund policy of the platform you purchased through and applicable law.

4. Your content

• 1.The content you import, enter or save ("your content") belongs to you or to its original rights holders. Using the App does not give us ownership of your content.
• 2.You may import only content that you have the right to read and use. You must not use the App to bypass paywalls, sign-in restrictions, digital rights management or other technical protection measures, or import content that infringes the intellectual property or other rights of others. The App does not open encrypted e-books.
• 3.To provide the service (including sync and AI processing), you authorize us to store, transmit and process your content to the extent necessary to provide the service to you. This authorization does not include making your content public or using it to train AI models.

5. AI-generated content

• 1.Explanations, learning reports, practice feedback and some definitions in the App are generated by AI. AI-generated content may contain errors, omissions or inappropriate material; it is provided for learning reference only and is not professional advice. Please use your own judgement together with authoritative sources.
• 2.The App labels areas generated by AI, such as explanations, reports and feedback. Short definitions shown in lookups are not labeled individually; this notice applies to them. Exported study materials carry an AI-generated marker in their file properties.
• 3.You must not use the AI features to generate content that violates the law or public order and morals.

6. Acceptable use

When using the App you must not:

• 1.violate any law or infringe the lawful rights of others;
• 2.reverse engineer, decompile or disassemble the App, except to the extent expressly permitted by law;
• 3.interfere with the normal operation of the App, or use technical means to obtain AI services in bulk;
• 4.claim invitation rewards repeatedly by using several accounts, falsified devices or other improper means;
• 5.sell, rent or otherwise provide the App or its AI allowance to others for profit.

If you breach these rules, we may suspend or terminate the service to you depending on the circumstances.

7. Intellectual property

The software, interface design, icons, text and built-in content of the App are owned by us or the relevant rights holders. The built-in dictionary data is used under its respective licenses and belongs to its original rights holders. You may not copy, modify or distribute any of the above without permission, except for reasonable use for your personal study.

8. Disclaimers and limitation of liability

• 1.We make reasonable efforts to keep the service stable and your data secure, but we do not guarantee that the service will be uninterrupted or error-free. To the extent permitted by law, we are not liable for interruptions or data loss caused by force majeure, network failures, third-party service outages or your device. We recommend that you regularly keep a copy using "Export all data".
• 2.To the maximum extent permitted by law, we are not liable for indirect losses arising from your use of the App, and our total liability shall not exceed the fees you paid for the App in the twelve months before the loss occurred.
• 3.Nothing in this section excludes or limits liability that cannot be excluded or limited by law.

9. Changes, suspension and termination

We may change, suspend or terminate some or all of the service for business reasons. Before terminating the service we will notify you in advance and give you a reasonable period to export your data. For paid subscriptions that have not yet expired, we will refund the remaining period on a pro-rata basis.

10. Minors

If you are under 14, please read these Terms and the Privacy Policy together with your parent or guardian and use the App only with their consent. Minors need the consent of a parent or guardian to purchase paid services.

11. Changes to these Terms

We may update these Terms. Updated Terms will be published in the App; for changes that materially affect your rights, we will notify you with a dialog the next time you open the App. Continuing to use the App means you accept the updated Terms; if you do not accept them, you may stop using the App and delete your account.

12. Governing law and disputes

These Terms are governed by the laws of the People's Republic of China (for the purpose of these Terms, excluding the laws of Hong Kong, Macao and Taiwan). The parties shall first seek to resolve any dispute arising from these Terms through friendly negotiation; failing that, either party may bring the dispute before the competent people's court at our place of business. Where mandatory laws of your place of residence give you greater protection, those laws prevail.

13. Miscellaneous

• 1.These Terms and the Privacy Policy form the entire agreement between you and us regarding the App. If any provision is held invalid, the remaining provisions remain in effect.
• 2.These Terms are made in Chinese and English. For users in mainland China the Chinese version prevails; for all other users the English version prevails.
• 3.If you have any questions about these Terms, please email us at [email protected].