TOPIK-note Privacy Policy
Effective Date: April 16, 2026
Lee Jung Holdings ("we," "us," or "our") operates the TOPIK-note mobile application (the "App"). This Privacy Policy explains how we collect, use, and protect information when you use our App.
1. Information We Collect
We do not require account registration or login. Our App does not collect any personal information directly from you.
However, the following information may be automatically collected during your use of the App:
| Information | Purpose | Retention |
|---|---|---|
| Device information (OS version, device model) | Service optimization, error diagnosis | 1 year |
| Advertising identifier (ADID/IDFA) | Personalized advertising (free tier) | 1 year |
| App usage data (sessions, screens viewed, learning statistics) | Service improvement | 1 year |
| IP address | Regional service delivery, fraud prevention | 6 months |
| Crash reports | Error diagnosis | 6 months |
Learning Data: Your word learning progress, quiz results, and review schedules are stored only on your device and are never transmitted to our servers.
2. How We Use Information
We use the collected information for the following purposes: - Providing and maintaining the TOPIK word learning service - Diagnosing app errors and improving service quality - Displaying advertisements to free-tier users - Analyzing usage statistics to improve the App
3. Third-Party Services
We use the following third-party services that may collect information:
| Service | Purpose |
|---|---|
| Google AdMob | Ad serving and measurement |
| PostHog | App analytics and A/B testing |
| Google Play Console (Android Vitals) | Crash diagnosis |
| Sentry | Error monitoring and crash diagnosis |
| Apple App Store / Google Play Store | In-app purchase processing |
Advertising identifiers and device information may be shared with Google AdMob for the purpose of displaying ads to free-tier users. This data is processed in accordance with Google's privacy policy.
We do not sell your personal information to third parties.
4. Your Choices
- Advertising ID: You can reset or opt out of personalized advertising through your device settings.
- Android: Settings → Google → Ads → Reset advertising ID
- iOS: Settings → Privacy & Security → Tracking → Disable "Allow Apps to Request to Track"
- Data Deletion: Uninstalling the App automatically deletes all learning data stored on your device.
- Contact Us: For any privacy-related inquiries, please contact us at ljholdings0328@gmail.com.
5. Children's Privacy
Our App is intended for general audiences. We do not knowingly collect personal information from children under 14. If you believe we have inadvertently collected such information, please contact us at ljholdings0328@gmail.com and we will promptly delete it.
6. Data Security
We implement appropriate technical measures to protect the information collected: - Learning data is stored locally on your device and is not transmitted to our servers. - All communications between the App and external services are encrypted using SSL/TLS.
7. International Data Transfers
If you are located outside the Republic of Korea, please note that automatically collected data (device information, usage data) may be processed by third-party service providers located in other countries. By using the App, you consent to such transfers.
8. Information for Users in the European Economic Area (EEA)
If you are located in the EEA, the following additional information applies under the General Data Protection Regulation (GDPR):
Legal Basis for Processing: We process automatically collected data based on our legitimate interests in maintaining and improving the App (Article 6(1)(f) GDPR).
Your Additional Rights: In addition to the rights described above, you have the right to: - Request access to your personal data - Request rectification or erasure of your personal data - Object to or request restriction of processing - Data portability - Lodge a complaint with your local data protection authority
Data Controller: Lee Jung Holdings, 1767 Nambusunhwan-ro, Suite 606, Gwanak-gu, Seoul, Republic of Korea. Contact: ljholdings0328@gmail.com.
9. Changes to This Privacy Policy
We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy within the App at least 7 days before the changes take effect.
10. Contact Us
If you have any questions about this Privacy Policy, please contact us: - Email: ljholdings0328@gmail.com