Effective Date: March 4, 2026
Sharp ("the App") values your privacy. This Privacy Policy explains how we collect, use, and protect your information.
1. Information We Collect
Automatically Collected
| Data |
Purpose |
Collected Via |
| Device identifier (IDFV) |
Usage analytics |
Amplitude, Firebase Analytics |
| App usage data (events, screen views) |
Service improvement & analytics |
Amplitude, Firebase Analytics |
| Crash logs |
App stability improvement |
Firebase Crashlytics |
| Device information (OS version, model) |
Compatibility analysis |
Amplitude, Firebase Analytics |
Information We Do NOT Collect
- Diary content: All diary entries are stored exclusively on your device and are never transmitted to external servers.
- AI analysis results: Processed entirely on-device using Apple Foundation Models. No data is sent externally.
- Biometric data: Face ID is handled by Apple's Secure Enclave. The App only receives the authentication result (success/failure).
- Personal identifiers: We do not collect your name, email address, phone number, or any other personally identifiable information.
2. How We Use Your Information
- Analyze usage patterns to improve the App
- Detect and resolve app errors and crashes
- Prioritize feature development based on usage statistics
3. Data Retention
- On-device data (diary entries, AI analysis): Retained on your device until you delete it or uninstall the App.
- Analytics data: Retained in accordance with Amplitude and Firebase policies, and automatically deleted up to 24 months after collection.
4. Third-Party Services
We do not sell or share your personal information with third parties. However, the following service providers process analytics data on our behalf:
| Provider |
Purpose |
Data Processed |
| Amplitude (USA) |
Usage analytics |
Device identifier, app usage data |
| Google Firebase (USA) |
Usage analytics & crash analysis |
Device identifier, app usage data, crash logs |