Effective Date: February 19, 2026
Okmin Lee ("Developer") values the privacy of users of "indexx" ("App"). This Privacy Policy describes the types of information collected by the App, the purposes of collection, retention periods, and users' rights.
1. Information We Collect
Automatically Collected Information
| Information |
Purpose |
Collected By |
| App usage statistics (screen views, feature usage frequency) |
Service improvement and error analysis |
Firebase Analytics |
| Crash logs (device model, OS version, error details) |
App stability improvement |
Firebase Crashlytics |
Optionally Collected Information
| Information |
Purpose |
| Camera access |
Book barcode (ISBN) scanning |
Information We Do Not Collect
- Personally identifiable information such as name, email, or phone number
- Location data
- Contacts, photo library, or other on-device data
2. Purpose of Information Use
- Book information search (ISBN-based search via Naver Book API)
- App usability analysis and service quality improvement
- Error detection and app stability enhancement
3. Retention and Deletion
- Reading records: Stored only on the user's device (SwiftData) and are not transmitted to any external server. All data is automatically deleted when the App is uninstalled.
- Analytics data: Managed according to Firebase's data retention policies. For details, see the Google Privacy Policy.
4. Third-Party Services
The App uses the following third-party services, each governed by their own privacy policies.