1. Introduction

This Privacy Policy describes how Franz Fahrenheit ("we," "our," or "us") collects, uses, and protects your information when you use our weather application, available as an iOS mobile app and web application. We are committed to protecting your privacy and being transparent about our data practices.

2. Information We Collect

2.1 Location Information

• Current Location: With your permission, we access your device's location to provide weather information for your current area
• Saved Locations: Cities and locations you manually add to the app are stored locally on your device
• Location Precision: We use approximate location (city-level) rather than precise GPS coordinates for weather data

2.2 Usage Analytics

• App usage patterns and feature interactions (via Firebase Analytics)
• Crash reports and performance data to improve app stability
• Subscription and purchase events (anonymized)
• Widget usage statistics

2.3 Device Information

• Device type and operating system version
• App version and installation date
• Language and region settings
• Unique device identifiers (for analytics purposes only)

2.4 Information We Do NOT Collect

• Personal identification information (name, email, phone number)
• Precise GPS coordinates or detailed location history
• Photos, contacts, or other personal data
• Browsing history or activity outside the app

3. How We Use Your Information

3.1 Core Functionality

• Provide accurate weather information for your locations
• Display current conditions and forecasts
• Update widgets with current weather data
• Cache weather data to improve performance and reduce data usage

3.2 Service Improvement

• Analyze usage patterns to improve app features
• Identify and fix bugs and performance issues
• Understand which features are most valuable to users
• Optimize app performance and user experience

3.3 Subscription Management

• Verify premium subscription status
• Provide appropriate features based on subscription level
• Identify legacy users for grandfathered premium access

4. Data Storage and Security

4.1 Local Storage

• Weather data is cached locally on your device for performance
• Your saved locations are stored in your device's local storage
• Preferences and settings are stored locally
• No personal data is stored on our servers

4.2 Third-Party Services

• Apple WeatherKit: Provides weather data; subject to Apple's privacy policy
• The Weather Company: Additional weather data source; subject to their privacy policy
• Firebase Analytics: Anonymous usage analytics; subject to Google's privacy policy
• RevenueCat: Subscription management; subject to their privacy policy

4.3 Data Security

• All data transmission is encrypted using industry-standard protocols
• We implement appropriate security measures to protect against unauthorized access
• Location data is processed with privacy-preserving techniques
• Analytics data is anonymized and aggregated

5. Data Sharing and Disclosure

5.1 We Do Not Sell Your Data

We do not sell, rent, or trade your personal information to third parties for marketing purposes.

5.2 Service Providers

We share limited data with service providers who help us operate the app:

• Weather data providers (for obtaining weather information)
• Analytics services (anonymized usage data only)
• Subscription management services
• Cloud infrastructure providers

5.3 Legal Requirements

We may disclose information if required by law, court order, or to protect our rights and safety.

6. Your Privacy Rights

6.1 Location Permissions

• You can revoke location access at any time through your device settings
• The app will continue to work with manually added locations
• Location access is optional for core functionality

6.2 Data Control

• Delete saved locations directly in the app
• Clear cached weather data by reinstalling the app
• Opt out of analytics through your device's privacy settings

6.3 Regional Rights

Depending on your location, you may have additional rights under local privacy laws (GDPR, CCPA, etc.). Contact us to exercise these rights.

7. Platform-Specific Privacy

7.1 iOS App

• Follows Apple's App Store privacy guidelines
• Uses iOS privacy features like App Tracking Transparency
• Widget data is shared through secure app groups
• Subscription data is managed through Apple's secure systems

7.2 Web Application

• Uses browser geolocation API with your permission
• Stores preferences in browser local storage
• No cookies are used for tracking
• Respects browser privacy settings

8. Children's Privacy

Franz Fahrenheit is not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected information from a child under 13, please contact us immediately.

9. International Data Transfers

Your information may be processed in countries other than your own, including the United States and Germany. We ensure appropriate safeguards are in place for international data transfers.

10. Data Retention

• Weather data is cached temporarily and automatically expires
• Analytics data is retained for up to 26 months
• Subscription data is retained as required for business purposes
• You can delete local data by uninstalling the app

11. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any material changes by posting the new Privacy Policy in the app and updating the "Last updated" date. Your continued use of the app after changes constitutes acceptance of the updated policy.

12. Contact Us

If you have questions about this Privacy Policy or our privacy practices, please contact us at bjoern.schefzyk@gmail.com or through the support channels provided in the application.

For privacy-related inquiries, you can also reach out through our official support channels. We are committed to addressing your privacy concerns promptly and transparently.