1. Introduction

Welcome to FlowIntervals! This Privacy Policy explains how we collect, use, and protect your information when you use our mobile application. By using FlowIntervals, you agree to the collection and use of information in accordance with this policy.

2. Information We Collect

2.1 Information You Provide

FlowIntervals stores the following data locally on your device only:

• Timer Settings: Your preferred focus durations, break lengths, and timer configurations
• Session History: Your completed focus sessions, timestamps, and session statistics
• Daily Progress: Your streaks, total focus time, and achievement data
• App Preferences: Sound settings, notifications preferences, and theme choices

Important: This data never leaves your device unless you explicitly enable analytics (see below).

2.2 Anonymous Analytics (Optional)

With your explicit consent, we collect anonymous usage analytics through Mixpanel to improve FlowIntervals. This includes:

• App Usage Patterns: Which features you use and how often
• Session Metrics: Anonymous statistics about focus session completion rates and durations
• Settings Preferences: Which timer configurations are most popular (anonymous)
• Technical Information: App version, device platform (iOS/Android), and language preference
• Anonymous User ID: A randomly generated identifier that cannot be linked to you personally

3. What We DON'T Collect

4. How We Use Your Information

4.1 On-Device Data

Data stored on your device is used to:

• Display your focus session history and statistics
• Calculate your streaks and achievements
• Remember your timer settings and preferences
• Send local notifications when timers complete

4.2 Analytics Data (If Enabled)

Anonymous analytics data is used to:

• Understand which features are most popular
• Identify and fix bugs and crashes
• Improve app performance and user experience
• Make informed decisions about new features

5. Data Sharing and Disclosure

5.1 Third-Party Services

We use the following third-party service for analytics:

5.2 No Selling or Renting

We never sell, rent, or trade your data. Your information is used solely to improve FlowIntervals.

5.3 Legal Requirements

We may disclose information if required by law, such as to comply with a subpoena or similar legal process. However, since we collect minimal anonymous data, there is very little information to disclose.

6. Data Security

We take data security seriously:

• Local Storage: Your session data is stored securely on your device using encrypted storage (Expo SecureStore)
• Transmission Security: All analytics data is transmitted over HTTPS encryption
• Anonymous by Design: We use randomly generated anonymous IDs that cannot be linked to you
• No Cloud Storage: Your personal timer data never leaves your device

7. Your Rights and Choices

7.1 Consent Management

• First Launch: You'll be asked for consent before any analytics are collected
• Change Anytime: Enable or disable analytics in the Settings panel
• Full Functionality: The app works perfectly without analytics enabled

7.2 Data Access and Deletion

• On-Device Data: Delete the app to remove all local data
• Analytics Data: Disable analytics in Settings to stop collection
• Request Deletion: Contact us to request deletion of analytics data (details below)

7.3 Export Your Data

You can export your session data directly from the Statistics panel in the app (JSON or CSV format).

8. Children's Privacy

FlowIntervals is suitable for all ages. We do not knowingly collect personal information from anyone, including children under 13. Our anonymous analytics (when enabled) contain no personal information and cannot be used to identify individual users of any age.

9. International Users

FlowIntervals is available worldwide. Analytics data (if you consent) is processed by Mixpanel in the United States. By using the app and enabling analytics, you consent to the transfer of anonymous usage data to the United States.

9.1 GDPR Compliance (EU Users)

If you're in the European Union, you have additional rights:

• Right to Access: Request information about data we hold
• Right to Rectification: Request correction of inaccurate data
• Right to Erasure: Request deletion of your data
• Right to Object: Object to data processing
• Right to Portability: Export your data

9.2 CCPA Compliance (California Users)

California residents have the right to:

• Know what personal information is collected
• Know if personal information is sold or disclosed
• Opt-out of the sale of personal information (note: we don't sell any data)
• Access and delete personal information

10. Notifications and Permissions

10.1 Required Permissions

• Notifications: To alert you when focus sessions and breaks complete
• Vibration: For haptic feedback during timer interactions

10.2 No Other Permissions

FlowIntervals does not request or use:

• Camera or photo library access
• Location services
• Microphone access
• Contact list access
• Calendar access

11. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. When we do:

• The "Last Updated" date will be revised
• Significant changes will be communicated through the app
• You'll be asked to review and consent to material changes
• Continued use of the app constitutes acceptance of changes

We encourage you to review this Privacy Policy periodically for any changes.

12. Open Source

FlowIntervals is committed to transparency. You can review our implementation of privacy features, including our analytics service and consent management, in our open-source codebase.