Privacy Policy

Last updated: May 3, 2026

KAI ("we", "our", "the App") respects your privacy. This policy explains how we collect, use, and protect your information.

1. Information We Collect

• Account Information: Email address, name, and password when you create an account.
• Learning Data: Conversation history, vocabulary saved, and lesson progress to personalize your experience.
• Audio Files: Audio lesson files you upload are stored securely in the cloud and are only accessible by you.
• Voice Data: When using voice features, speech is processed in real-time for recognition. We do not store voice recordings.
• Usage Data: Basic analytics such as app usage patterns to improve the service.

2. How We Use Your Information

• To provide AI-powered Korean language tutoring and conversation practice.
• To store and manage your uploaded audio lessons.
• To track your vocabulary and learning progress.
• To improve the App's features and user experience.

3. Data Storage & Security

Your data is stored on secure cloud servers. Audio files are stored in encrypted S3 buckets. Passwords are hashed using bcrypt. All API communications use HTTPS encryption.

4. Data Sharing

We do not sell, trade, or share your personal data with third parties. AI conversation data is processed by our language model provider solely for generating responses and is not used for training.

5. Your Rights

• Access, update, or delete your account and data at any time through the app.
• Request data export by contacting us.
• Delete your account, which removes all associated data.

6. Children's Privacy

The App is not intended for children under 13. We do not knowingly collect data from children under 13.

7. Changes to This Policy

We may update this policy. Continued use of the App constitutes acceptance of changes.

8. Contact Us

For privacy questions, contact us through the app's support channels.