Terms of Service — Master Chinese (English)

Last updated: 10 October 2025

1. Introduction

1.1. These Terms of Service (“Terms”) constitute a binding legal agreement between you (“User”, “you”) and Master of Languages, based in Sofia, Bulgaria (“Master of Languages”, “we”, “us”, “our”), governing your access to and use of the Master Chinese mobile application, related services, and all associated websites and digital products (collectively, the “Service”).

1.2. By creating an account or using the Service, you confirm that you have read, understood, and agree to these Terms. If you do not agree, do not use the Service.

1.3. These Terms apply in conjunction with our Privacy Policy, available at https://masteroflanguages.com/privacypolicy.

1.4. The Service is intended for individuals aged 13 or older. Users under 18 must have permission from a parent or legal guardian.

2. The Service

2.1. Master Chinese is an educational mobile application designed to support users in learning the Chinese language through lessons, exercises, and other learning materials.

2.2. Features may include AI-assisted practice, chat with virtual instructors, leaderboards, challenges, and performance tracking. Some features may not be available in all regions or to all users.

2.3. We reserve the right to modify or discontinue any part of the Service without prior notice, provided that such changes do not materially reduce the core educational experience.

3. Account Registration and Security

3.1. To use the Service, you may create an account using an email address and password or sign in through third-party providers such as Google, Facebook, or Apple.

3.2. You are responsible for maintaining the confidentiality of your login credentials and for all activities under your account.

3.3. You must not share your account with others, impersonate another person, or use false information.

3.4. We may suspend or terminate your account if we suspect unauthorized access or violation of these Terms.

4. Use of the Service

4.1. The Service is provided solely for personal, non-commercial use.

4.2. You agree not to:

a) Copy, distribute, or modify the Service or its content without our written consent.

b) Reverse-engineer, decompile, or otherwise attempt to extract source code.

c) Use the Service to distribute spam, malware, or offensive material.

d) Attempt to gain unauthorized access to any systems or networks.

e) Use automated systems or scripts to access or interact with the Service.

4.3. We may monitor usage to ensure compliance and maintain system integrity.

5. Subscriptions and Payments

5.1. Certain features of the Service may require a paid subscription (“Premium Subscription”).

5.2. Subscriptions will be handled by Google Play or Apple App Store in accordance with their respective terms of service and billing practices.

5.3. Renewal and cancellation are managed directly through your app store account settings.

5.4. We do not store or process your full payment details.

5.5. Refunds are subject exclusively to the applicable store’s refund policy.

6. Communications

6.1. We may send you essential service messages such as verification emails, password resets, or account notices.

6.2. Marketing or promotional communications will only be sent if you have provided explicit consent. You may withdraw consent at any time via settings or by contacting legal@masteroflanguages.com.

7. Intellectual Property

7.1. All intellectual property rights in the Service, including but not limited to software, design, graphics, text, learning materials, and trademarks, belong to Master of Languages or its licensors.

7.2. You are granted a limited, non-exclusive, non-transferable, revocable license to use the Service for personal educational purposes only.

7.3. Any unauthorized use, reproduction, or distribution of the Service or its content is strictly prohibited.

8. User-Generated Content

8.1. Some features may allow users to submit or display content such as messages, text, or other material (“User Content”).

8.2. You retain ownership of your User Content but grant us a worldwide, royalty-free, non-exclusive license to use, display, and distribute such content for the operation and improvement of the Service.

8.3. You agree that your User Content will not be unlawful, defamatory, or infringe on others’ rights.

8.4. We reserve the right to remove or restrict access to any content that violates these Terms or applicable law.

9. AI Features

9.1. The Service may include AI-powered tools such as conversational practice or instructor chat.

9.2. AI responses are generated algorithmically and may not always be accurate, complete, or appropriate. They should not be relied upon as factual or professional advice.

9.3. By using AI features, you agree not to input sensitive, confidential, or personal data beyond what is necessary for the learning experience.

10. Termination

10.1. You may delete your account at any time through in-app settings.

10.2. We may suspend or terminate your account or restrict access if you breach these Terms, misuse the Service, or act unlawfully.

10.3. Upon termination, all licenses and rights granted to you will cease immediately.

11. Limitation of Liability

11.1. The Service is provided “as is” and “as available.”

11.2. To the fullest extent permitted by law, Master of Languages disclaims all warranties, whether express or implied, including but not limited to fitness for a particular purpose, accuracy, or non-infringement.

11.3. We are not liable for any indirect, incidental, or consequential damages, or loss of profits, data, or goodwill.

11.4. Our aggregate liability for any claim related to the Service shall not exceed the total amount you paid for the Service within the preceding twelve months (if applicable).

12. Indemnification

You agree to indemnify and hold harmless Master of Languages, its affiliates, and employees from any claims, liabilities, or damages arising from your violation of these Terms or misuse of the Service.

13. Modifications to the Terms

13.1. We may revise these Terms from time to time. The “Last updated” date indicates the most recent version.

13.2. Continued use of the Service after such updates constitutes acceptance of the revised Terms.

14. Governing Law and Jurisdiction

14.1. These Terms shall be governed by and construed in accordance with the laws of Bulgaria, excluding its conflict of law principles.

14.2. Any disputes arising under or in connection with these Terms shall be subject to the exclusive jurisdiction of the competent courts in Sofia, Bulgaria.

15. Miscellaneous

15.1. If any provision of these Terms is held invalid or unenforceable, the remaining provisions remain in effect.

15.2. Failure to enforce any provision shall not constitute a waiver of any right.

15.3. These Terms constitute the entire agreement between you and Master of Languages concerning your use of the Service.

16. Language and Precedence

This document is published in English and Bulgarian. In the event of inconsistency, the Bulgarian version prevails.

17. Contact

For inquiries regarding these Terms, contact: legal@masteroflanguages.com.