Hanlexon (“we,” “us,” or “our”) operates the website located at www.hanlexon.com and related services (collectively, the “Service”). This Privacy Policy describes how we collect, use, disclose, and safeguard your information when you use our Service. By accessing or using the Service, you agree to the terms of this Privacy Policy.
1. Information We Collect
1.1 Information You Provide
- Account Registration. When you create an account, we collect your email address and a password. Passwords are stored in hashed form and are never accessible in plaintext.
- Profile Information. You may voluntarily provide information such as your learning goals, HSK level, preferred language, and role (student, teacher, parent, or administrator).
- User-Generated Content. Content you create on the Service, including worksheets, vocabulary lists, reading materials, study notes, and feedback submissions. Study materials you create (such as vocabulary lists and reading materials) are shared with the Hanlexon learning community as described in Section 3.
- Payment Information. If you purchase a subscription, payment is processed by our third-party payment processor, Stripe, Inc. We do not store your full payment card number. We retain your Stripe customer identifier, subscription status, and transaction history.
- Communications. If you contact us via email or in-app feedback, we retain the content of your messages to respond to your request and improve the Service.
1.2 Information Collected Automatically
- Learning Activity Data. We collect data about your study activity, including characters studied, mastery levels, review schedules, session duration, and assessment results. This data is essential for our spaced repetition and adaptive learning algorithms.
- Usage Data. We collect information about how you interact with the Service, including pages visited, features used, and performance metrics, for the purpose of improving the Service.
- Device Information. We may collect information about the device you use to access the Service, including browser type, operating system, and screen resolution.
1.3 Information from Third Parties
If you sign in using a third-party service (such as Google or Apple), we receive your name, email address, and profile picture from that service, as authorized by you during the sign-in process. We do not receive or store your third-party password.
2. How We Use Your Information
We use the information we collect for the following purposes:
- To provide, maintain, and improve the Service;
- To personalize your learning experience through adaptive algorithms and content recommendations;
- To enable classroom features, including teacher-student interaction, assignment tracking, and progress reports;
- To enable parent monitoring features for linked student accounts;
- To process payments and manage subscriptions;
- To communicate with you about your account, including password resets, subscription changes, and service announcements;
- To respond to your inquiries and feedback;
- To detect, prevent, and address technical issues and security threats;
- To comply with legal obligations.
3. How We Share Your Information
We do not sell, rent, or trade your personal information. We share your information only in the following limited circumstances:
- Service Providers. We use third-party service providers to process payments (Stripe), host infrastructure (Amazon Web Services), and deliver content. These providers are contractually obligated to protect your data and use it only for the purposes we specify.
- Language Processing Services. When you use features such as the tutor, voice conversation, or pronunciation coaching, your input text and audio may be transmitted to third-party service providers for processing. We do not transmit your personal identity information to these providers. The data transmitted is limited to the content necessary to perform the requested function.
- Shared Study Materials. Vocabulary lists and reading materials you create on the Service are visible to other Hanlexon users. Other users may search for, view, and study from your materials, but they cannot edit or delete them. Your personal information (name, email address, account details) is not attached to or displayed with shared materials. Only the educational content itself is visible.
- Educational Context. If you join a classroom, your teacher may view your learning progress, activity, and assessment results within that class. Linked parent accounts may view their child’s learning progress.
- Legal Requirements. We may disclose your information if required to do so by law, regulation, legal process, or governmental request.
- Business Transfers. In the event of a merger, acquisition, or sale of assets, your information may be transferred as part of that transaction. We will notify you of any such change.
4. Data Security
We implement industry-standard technical and organizational measures to protect your personal information against unauthorized access, alteration, disclosure, or destruction. These measures include encryption of data in transit and at rest, access controls, regular security assessments, and secure software development practices. However, no method of transmission over the Internet or method of electronic storage is completely secure, and we cannot guarantee absolute security.
5. Data Retention
We retain your personal information for as long as your account is active or as needed to provide the Service. If you request deletion of your account, we will permanently delete or anonymize your personal data within thirty (30) days, except where retention is required by law or for legitimate business purposes (such as resolving disputes or enforcing our agreements).
6. Children’s Privacy
The Service may be used by children under the age of 13 in educational settings. In such cases, the child’s school or teacher acts as the agent of the parent or guardian for purposes of consent under the Children’s Online Privacy Protection Act (COPPA). We collect only the minimum information necessary to provide the educational service. Parents and guardians may review their child’s information, request deletion, or withdraw consent by contacting us at admin@hanlexon.com.
7. Cookies and Local Storage
We use essential cookies for authentication and security purposes (session management and cross-site request forgery protection). We use browser local storage to save your preferences (such as display theme and study state). We do not use third-party advertising or tracking cookies.
8. Your Rights
Depending on your jurisdiction, you may have the following rights regarding your personal information:
- Access. You may request a copy of the personal information we hold about you.
- Correction. You may request that we correct inaccurate or incomplete personal information.
- Deletion. You may request that we delete your personal information, subject to certain legal exceptions.
- Data Portability. You may request a copy of your data in a structured, machine-readable format.
- Opt-Out. You may opt out of non-essential communications at any time through your account settings.
- Withdraw Consent. Where processing is based on your consent, you may withdraw consent at any time without affecting the lawfulness of prior processing.
To exercise any of these rights, please contact us at admin@hanlexon.com. We will respond to your request within thirty (30) days.
9. International Data Transfers
Your information may be processed and stored in the United States or other countries where our service providers operate. By using the Service, you consent to the transfer of your information to countries outside your country of residence, which may have different data protection laws.
10. Changes to This Policy
We may update this Privacy Policy from time to time. If we make material changes, we will notify registered users by email or by posting a prominent notice on the Service. Your continued use of the Service after such changes constitutes your acceptance of the updated Privacy Policy.
11. Contact Us
If you have questions or concerns about this Privacy Policy or our data practices, please contact us:
Hanlexon
Email: admin@hanlexon.com