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