Privacy Policy

Last Updated: September 16, 2026
Mandarin9 (“Mandarin9,” “we,” “us,” or “our”) respects your privacy and is committed to protecting your personal information.
This Privacy Policy explains how Mandarin9 collects, uses, stores, and protects information when you use the Mandarin9 website, mobile applications, learning services, and related services (collectively, the “Services”).
By using our Services, you acknowledge the practices described in this Privacy Policy.
1. About Mandarin9
Mandarin9 is a Chinese-language learning platform providing digital Chinese-learning content, including lessons, exercises, videos, educational materials, and other learning resources.
This Privacy Policy applies to:
- The Mandarin9 website and related webpages;
- The Mandarin9 iOS application;
- The Mandarin9 Android application;
- Teacher and school-related services provided through Mandarin9; and
- Other services that link to or reference this Privacy Policy.
2. Information We Collect
Depending on how you use Mandarin9, we may collect the following categories of information.
2.1 Account Information
When you create or use a Mandarin9 account, we may collect information such as:
- Name;
- Email address;
- Username or account identifier;
- Password or authentication information;
- Organization or school information;
- Information relating to your role as a teacher, student, administrator, or other user.
2.2 Learning and Usage Information
To provide and improve our educational services, we may collect information about your use of Mandarin9, such as:
- Lessons and learning materials accessed;
- Exercises and questions completed;
- Learning progress;
- Scores and results;
- Course or content preferences;
- App and website usage information; and
- Other information necessary to provide learning and educational services.
For school or teacher accounts, we may also provide teachers or authorized school administrators with information about student participation and learning progress where appropriate for educational purposes.
2.3 Device and Technical Information
When you access Mandarin9 through a website or mobile application, we may automatically receive certain technical information, such as:
- Device type;
- Operating system and app version;
- Browser type;
- IP address;
- General technical information about your device;
- Log and diagnostic information; and
- Information about how the Services are accessed and used.
We use this information primarily to operate, secure, maintain, and improve our Services.
2.4 Information You Provide to Us
We may collect information that you voluntarily provide, including information submitted when you:
- Contact us;
- Request a free trial;
- Register for an account;
- Join a school or organization;
- Participate in surveys or educational programs;
- Submit feedback; or
- Otherwise communicate with Mandarin9.
3. How We Use Information
We may use information we collect to:
- Create and manage user accounts;
- Provide access to Mandarin9's educational content and Services;
- Provide lessons, exercises, videos, and other learning features;
- Track and display learning progress;
- Provide teacher and school-related functionality;
- Respond to questions and requests;
- Provide customer support;
- Maintain and improve the Services;
- Diagnose technical problems and prevent misuse;
- Protect the security and integrity of our Services;
- Communicate with users about their accounts, Services, updates, or important notices; and
- Comply with applicable legal obligations.
We do not use personal information for purposes that are incompatible with those described in this Privacy Policy unless permitted or required by applicable law.
4. How We Share Information
We do not sell your personal information.
We may share information in the following circumstances:
Service Providers
We may use third-party companies and service providers to help us operate Mandarin9, including providers for hosting, cloud services, analytics, authentication, communications, customer support, security, and other technical services.
These providers may process information on our behalf and are expected to use it only for the purposes for which we engage them, subject to applicable agreements and laws.
Schools and Organizations
If you use Mandarin9 through a school, educational institution, or organization, certain account and learning information may be accessible to authorized teachers, administrators, or other authorized representatives of that organization, as appropriate for providing and managing the educational service.
Legal and Safety Requirements
We may disclose information when reasonably necessary to:
- Comply with applicable law, regulation, legal process, or governmental request;
- Protect the rights, property, or safety of Mandarin9, our users, or others;
- Detect, prevent, or investigate fraud, security incidents, or misuse; or
- Enforce our agreements and policies.
Business Transfers
If Mandarin9 is involved in a merger, acquisition, restructuring, financing, sale of assets, or similar transaction, information may be transferred as part of that transaction, subject to applicable legal requirements.
5. Cookies and Similar Technologies
Our website may use cookies and similar technologies to:
- Keep the website functioning properly;
- Remember preferences;
- Understand website usage;
- Improve website performance; and
- Support security and authentication.
You may be able to control cookies through your browser settings. Disabling certain cookies may affect the functionality of the website.
6. Third-Party Services
Mandarin9 may use third-party services to provide hosting, analytics, authentication, communications, payment processing, security, or other functions.
Third-party services may process information according to their own privacy policies and applicable agreements with Mandarin9.
Where required, Mandarin9 will provide appropriate disclosures regarding relevant third-party data practices.
7. Data Security
We take reasonable administrative, technical, and organizational measures designed to protect personal information against unauthorized access, loss, misuse, alteration, or disclosure.
However, no method of transmitting or storing information can be guaranteed to be completely secure. Therefore, we cannot guarantee absolute security.
8. Data Retention
We retain personal information for as long as reasonably necessary to:
- Provide our Services;
- Maintain user accounts;
- Provide educational and learning functionality;
- Meet legal, accounting, or regulatory requirements;
- Resolve disputes;
- Enforce our agreements; and
- Protect our legitimate business interests.
When information is no longer reasonably necessary for these purposes, we may delete, anonymize, or securely dispose of it in accordance with applicable law.
9. Account and Data Deletion
If you have a Mandarin9 account, you may request deletion of your account and associated personal information by contacting us using the contact information below.
When we receive a valid deletion request, we will take reasonable steps to delete or anonymize the information associated with your account, subject to information that we are legally required or permitted to retain.
Certain information may need to be retained for legal, security, fraud-prevention, dispute-resolution, or other legitimate purposes.
For users whose accounts are managed through a school or organization, some account-management or deletion requests may need to be coordinated with the relevant organization.
10. Children's Privacy
Mandarin9 provides educational content that may be used by students and schools.
If a child or student uses Mandarin9, the applicable school, teacher, parent, or guardian may have a role in establishing or managing the child's access to the Services.
We do not knowingly collect personal information from children in circumstances where such collection is prohibited by applicable law.
Where required by applicable law, we will obtain appropriate parental, guardian, school, or other authorization before collecting or processing children's personal information.
If you believe that a child has provided personal information to us inappropriately, please contact us so that we can review the situation and take appropriate action.
11. International Data Transfers
Mandarin9 and our service providers may process or store information in countries other than the country in which you live.
Where personal information is transferred across borders, we will take appropriate measures required by applicable privacy laws to protect that information.
12. Your Privacy Rights
Depending on your location and applicable law, you may have certain rights regarding your personal information, including the right to:
- Request access to personal information we hold about you;
- Request correction of inaccurate information;
- Request deletion of personal information;
- Request restriction of certain processing;
- Object to certain processing;
- Request a copy of certain information in a portable format; and
- Withdraw consent where processing is based on consent.
To exercise applicable rights, please contact us using the information below.
We may need to verify your identity before completing certain requests.
13. California Privacy Rights
If you are a California resident, applicable California privacy laws may provide additional rights regarding your personal information.
Depending on the circumstances, these rights may include the right to know about personal information collected about you, request deletion or correction, and obtain information about how personal information is used or disclosed.
Mandarin9 does not sell personal information.
California residents may contact us using the information below to exercise applicable privacy rights.
14. European and Other Privacy Rights
If you are located in the European Economic Area, United Kingdom, or another jurisdiction with applicable comprehensive privacy laws, you may have additional rights under those laws.
Where applicable, Mandarin9 will process personal information on an appropriate legal basis, such as providing the Services, complying with legal obligations, obtaining consent, or pursuing legitimate interests where permitted by law.
You may also have the right to lodge a complaint with your local data protection authority.
15. Changes to This Privacy Policy
We may update this Privacy Policy from time to time to reflect changes to our Services, technology, legal requirements, or privacy practices.
When we make changes, we will update the “Last Updated” date at the top of this Privacy Policy.
If changes are material, we may provide additional notice where required by applicable law.
16. Contact Us
If you have questions about this Privacy Policy, our privacy practices, or your personal information, please contact us:
Mandarin9
Website: https://www.mandarin9.com
Email: info@mandarin9.com
If you are requesting access, correction, or deletion of your personal information, please include sufficient information for us to identify your account and process your request.

Last Updated: September 16, 2026