Privacy Policy

LDW ("we," "our," or "us") has established this Privacy Policy (the "Policy") regarding the handling of personal information of customers who use the DuraRing application (the "App").

1. Information We Collect

The App collects the following information:

1.1 Account Information

• Email address
• Username
• Profile information (avatar image, etc.)
• Authentication provider information (Google, Apple ID, etc.)

1.2 App Usage Information

• Registered book information (title, ISBN, cover image, etc.)
• Bookmarks
• Search history
• OCR (Optical Character Recognition) processing history
• Captured images
• AI feature usage history
• Points transaction history
• Mission achievement status
• Quiz history
• Notes and comments

1.3 Technical Information

• Device information (model, OS version, etc.)
• App usage statistics
• Crash reports
• IP address

2. How We Use Information

We use the collected information for the following purposes:

• Providing the App's services
• User authentication and account management
• Improving user experience
• Providing personalized content
• Customer support
• App improvement and new feature development
• Preventing fraudulent use
• Statistical analysis

3. Third-Party Services

The App uses the following third-party services:

3.1 Firebase (Google LLC)

• Authentication service (Firebase Authentication)
• Database (Cloud Firestore)
• Storage (Firebase Storage)
• Cloud functions (Cloud Functions)

Details: https://firebase.google.com/support/privacy

3.2 Google Mobile Ads

• Ad delivery
• May use advertising identifiers for personalized ads

Details: https://policies.google.com/privacy

3.3 Google Cloud Vision

• OCR (Optical Character Recognition) functionality

3.4 CLOVA (NAVER Corporation)

• OCR (Optical Character Recognition) functionality

3.5 Nano Banana (AI Image Generation)

• AI image generation functionality

3.6 OpenAI ChatGPT

• AI dictionary functionality

3.7 Google Gemini

• AI dictionary functionality

3.8 Perplexity

• AI dictionary functionality

For details on data handling by each third-party service, please review the privacy policies and related terms provided by each service provider.

4. Information Sharing

We do not share your personal information with third parties except in the following cases:

• With your consent
• When required by law
• When necessary to protect life, body, or property
• When disclosed to service providers to the extent necessary for service delivery

5. Data Storage and Protection

Your personal information is managed as follows:

• Data is stored on Firebase's secure servers
• Communications are encrypted (HTTPS)
• Appropriate access controls are implemented
• Regular security audits are conducted

6. Your Rights

You have the following rights:

• Right of Access: Right to access your personal information
• Right to Rectification: Right to correct inaccurate personal information
• Right to Erasure: Right to delete your account and related data
• Data Portability: Right to request data export

To exercise these rights, please contact us through the app's settings screen or support.

7. Account Deletion

When you delete your account, the following data will be deleted:

• Registered book information
• Bookmarks
• Search history
• OCR history
• Points history
• All other user data

Account deletion can be performed from the profile screen within the app.

8. Cookies and Tracking Technologies

The App may use the following technologies:

• Analytics tools to analyze app usage
• Tracking technologies for ad delivery
• Local storage for session management

9. Changes to Privacy Policy

We may update this Policy from time to time. If there are significant changes, we will notify you within the app. Continued use of the App after changes constitutes acceptance of the updated Policy.

10. Governing Law and Jurisdiction

In the event of any dispute relating to the Service, the court having jurisdiction over the provider's location shall have exclusive jurisdiction.