Privacy Policy

This Privacy Policy describes how K-Study ("the App", "we", "us") collects, uses, and protects your personal information. By using the App, you agree to the collection and use of information in accordance with this policy.

1. Information We Collect

We collect the following types of information:

Account Information (when you sign in):

• Email address
• Display name
• Profile photo URL

Usage Data:

• Lesson progress, XP, accuracy, and completed lessons
• Leaderboard rankings and streak data

Automatically Collected:

• Advertising identifiers (for Google AdMob)
• App access timestamps

2. How We Use Your Information

We use the collected information for the following purposes:

• Account management: To identify users, manage sign-in, and prevent unauthorized access
• Service delivery: To deliver lessons, track progress, and manage XP and leaderboards
• Service improvement: To analyze usage patterns and improve the App
• Advertising: To serve personalized ads through Google AdMob

3. Data Retention

We retain your personal information for as long as your account is active. When you delete your account, all associated data is permanently deleted immediately.

4. Third-Party Services

We use the following third-party services to operate the App:

These services may collect information as described in their respective privacy policies. We encourage you to review Google's Privacy Policy.

5. Data Sharing

We do not sell or share your personal information with third parties, except:

• With your prior consent
• When required by law or legal proceedings
• To protect the rights, safety, or property of users

6. Data Security

We implement appropriate security measures to protect your data:

• All data is encrypted in transit using SSL/TLS protocols
• Data is stored securely on Google Firebase with access control rules
• Access to personal data is restricted to authorized personnel only

7. Your Rights

You have the following rights regarding your personal information:

• Access your personal data
• Request correction of inaccurate data
• Request deletion of your data
• Request restriction of data processing

You can exercise these rights through the App's settings or by contacting us via email.

8. Children's Privacy

The App is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13. If we become aware that we have collected such information, we will take steps to delete it.

9. Account Deletion

You can delete your account at any time through the App's settings. Upon deletion, all your personal data, lesson progress, XP, rankings, and streak data will be permanently removed. For more details, visit our Account Deletion page.

10. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify users of any significant changes through the App. Continued use of the App after changes constitutes acceptance of the updated policy.

11. Third-Party Content & Intellectual Property

Every Korean word, sentence and explanation in K-Study is written by us for this app. The app does not host, display or distribute dialogue, scripts, song lyrics, posters, promotional images, photographs, album artwork, audio recordings or video clips from any drama, film or song.

Course names such as "The Late-Night Food Stall" or "The Palace" describe common scene types found across the genre, not any specific work. Where the app teaches everyday vocabulary that fan communities use, those words are ordinary Korean vocabulary and slang, not quotations.

K-Study is an independent language-learning app and is not affiliated with, endorsed by, or sponsored by any broadcaster, studio, distributor, record label or management agency.

For copyright concerns or takedown requests: Please contact addwisdom@gmail.com with the subject "Copyright Concern". We respond within 24-48 hours and will promptly remove any content upon verified request from the rights holder.

12. Contact Us

If you have any questions or concerns about this Privacy Policy, please contact us: