Privacy Policy
Last updated: August 2025
Privacy First: Your health data stays on your device. We don't collect, store, or share your personal lens or health information.
1. Information We Do NOT Collect
Lens Tracker App is designed with privacy in mind. We do NOT collect:
- Lens prescription information
- Personal health data
- Contact information
- Photos of prescriptions
- Location data (unless required for ads)
2. Information We May Collect
To provide advertising services, limited anonymous data may be collected by our advertising partners:
- Device advertising identifier (IDFA)
- App usage statistics (anonymous)
- General location (country/region level for ad targeting)
- Device type and OS version
- IP address (used by ad networks)
3. Local Data Storage
All your health and lens data is stored locally on your device using:
- Local Database: Lens records, settings, and preferences
- Device Photos: Prescription photos (premium feature) stored in app's private container
- UserDefaults: App settings and configuration
- App Group: Shared data between main app and widget
4. Third-Party Services
Google AdMob (Advertising)
We use Google AdMob to display advertisements. AdMob may collect:
- Device advertising identifier (IDFA)
- IP address and approximate location
- Device information (model, OS version)
- Ad interaction data
- App usage analytics for ad optimization
You can opt out of personalized ads through your device settings (iOS: Settings > Privacy & Security > Apple Advertising > Personalized Ads)
Google AdMob Privacy Policy: https://policies.google.com/privacy
RevenueCat (Subscription Management)
For premium subscriptions, we use RevenueCat which may collect:
- Anonymous subscription status
- App Store transaction information
- Device type for subscription validation
RevenueCat's Privacy Policy: https://www.revenuecat.com/privacy
5. Permissions We Request
Notifications
- Purpose: Remind you to change lenses
- Data: Only scheduling information, no content sent externally
Photos (Premium Feature)
- Purpose: Save prescription photos
- Storage: Locally in app container only
- Access: Never shared or uploaded
Advertising Identifier
- Purpose: Show relevant ads and measure ad performance
- Control: Can be reset or limited in iOS Settings
6. Widget Data
The home screen widget displays your lens information by reading locally stored data. No information is transmitted outside your device for widget functionality.
7. Advertising and Data Sharing
Your health data is never shared. However, for advertising purposes:
- AdMob: Shares anonymous device and usage data for ad targeting
- Your Health Data: Never leaves your device except for standard iOS backup
- Lens Information: Never shared with advertisers or third parties
8. Data Security
Your data is protected by:
- iOS app sandboxing
- Local encryption for sensitive health data
- Separation of health data and advertising data
- HTTPS encryption for ad requests
- App Group security for widget communication
9. Your Rights and Choices
You have control over your data:
- Health Data: Complete control - view, edit, or delete in app
- Advertising: Disable personalized ads in iOS Settings
- Reset Advertising ID: iOS Settings > Privacy & Security > Apple Advertising
- Delete All Data: Use "Reset All Data" in Settings or delete the app
10. Children's Privacy
Our app is rated 4+ and safe for all ages. We do not knowingly collect personal information from children under 13. AdMob advertising follows COPPA guidelines for child-directed apps.
11. International Data Transfers
Advertising data may be transferred to and processed in countries where Google operates its services. Your health and lens data always remains on your device.
12. Changes to Privacy Policy
We will notify users of any material changes to this privacy policy through the app and update the "Last updated" date above.
13. Contact Us
If you have questions about this Privacy Policy, contact us at: lenstrackerapp@gmail.com
© 2025 Lens Tracker App. All rights reserved.