Privacy Policy
Last updated: February 2026
This Privacy Policy describes how we collect, use, and protect your personal information when you use our online learning platform. By using our services, you agree to the collection and use of information in accordance with this policy.
1. Information We Collect
We collect the following types of personal information: • Account Information: Name, email address, password, nickname, birthday, gender, phone number, and profile photo. • Address Information: Address, city, prefecture/state, postal code, and country (if provided). • Professional Information: Occupation and qualification details (if provided). • Learning Data: Study progress, exam scores, practice history, study time, accuracy rates, streaks, and question answers. • Subscription Data: Plan selections, payment method, transaction records, and billing history. • Support Inquiries: Messages, subject lines, and any files submitted through our support or contact forms. • Device and Usage Data: Browser type, language preferences, and general usage patterns.
2. How We Use Your Information
We use your personal information for the following purposes: • To create and manage your account. • To provide personalized learning experiences, track your progress, and display statistics. • To process subscriptions, payments, and manage billing. • To display leaderboard rankings and achievements (using your name or nickname). • To respond to your support inquiries and feedback. • To send important service notifications (account verification, password resets, subscription updates). • To improve our platform, content, and learning algorithms.
3. Data Storage and Security
Your data is stored on secure servers with industry-standard encryption. We use JWT (JSON Web Token) authentication to protect your sessions. Your password is hashed and never stored in plain text. Local storage on your device is used to save authentication tokens, language preferences, and UI settings for a better user experience. These are stored locally on your browser and are not transmitted to third parties.
4. Data Sharing
We do not sell, trade, or rent your personal information to third parties. Your information may be shared in the following limited circumstances: • Leaderboard & Rankings: Your name/nickname, scores, and achievements may be visible to other users on the platform leaderboard. • Common Exams: If you participate in common exams with privacy consent, your name and scores may be visible to other participants. • Service Providers: We may share data with trusted service providers who assist in operating our platform (hosting, email delivery), under strict confidentiality agreements. • Legal Requirements: We may disclose information if required by law or to protect our rights and safety.
5. Your Rights
You have the right to: • Access your personal data through your profile page. • Update or correct your information at any time. • Delete your profile photo. • Request deletion of your account by contacting our support team. • Change your language and notification preferences. • Cancel your subscription at any time.
6. Cookies and Local Storage
Our platform uses local storage (not cookies) to store: • Authentication tokens for maintaining your login session. • Language preference settings. • UI preferences and theme settings. • Pending subscription information during the checkout process. These are essential for the proper functioning of the platform and cannot be disabled without affecting service functionality.
7. Children's Privacy
Our service is intended for users aged 18 and above. We do not knowingly collect personal information from children under 18. If we discover that a child under 18 has provided personal information, we will take steps to delete that information promptly.
8. Changes to This Policy
We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated revision date. We encourage you to review this policy periodically for any changes.
If you have any questions about this Privacy Policy, please contact us through the Contact page or reach out to our support team.