Effective Date: July 31, 2025
Last Updated: July 31, 2025

1. Introduction

Welcome to Migraine Tracker, developed by Mustafa Mir Ömer Kalkan (“we,” “our,” or “us”). As an independent developer, I am committed to protecting your privacy and handling your personal information with care and transparency. This Privacy Policy explains how we collect, use, store, and protect your information when you use our mobile application (“App”).

IMPORTANT: This App deals with sensitive health information. We take your data privacy seriously and store all your health data locally on your device only.

2. Information We Collect

2.1 Health and Migraine Data

When you use our App, you may provide:

• Migraine episode details (dates, times, duration, severity levels)
• Symptoms experienced during episodes
• Potential triggers you identify
• Medications taken and their effectiveness
• Relief methods used
• Personal notes and observations
• Pain location and intensity information

2.2 App Usage and Analytics Data

We automatically collect through Firebase Analytics:

• Device information (model, operating system version, unique identifiers)
• App usage analytics (features used, session duration, screen views)
• Performance metrics and crash reports
• Anonymous usage patterns and interaction data

2.3 Subscription Data

We collect through RevenueCat for subscription management:

• Purchase transactions and subscription status
• Payment processing information (handled by Apple App Store)
• Subscription renewal and cancellation data
• Premium feature usage analytics

2.4 Optional Information

You may choose to provide:

• Push notification preferences
• App settings and customizations
• Feedback and support communications

3. How We Use Your Information

3.1 Primary Purposes

• Core Functionality: Enable migraine tracking, calendar views, and data visualization
• Insights Generation: Analyze your data to identify patterns and provide personalized insights
• Data Export: Generate reports in PDF or CSV format when requested (premium subscribers only)
• Reminders: Send push notifications based on your preferences

3.2 Service Improvement

• Improve app performance and user experience
• Develop new features and enhancements
• Conduct analytics to understand user behavior
• Provide customer support and technical assistance

3.3 Legal and Business Purposes

• Comply with legal obligations and regulatory requirements
• Protect our rights and prevent misuse of the App
• Process payments and manage subscriptions
• Communicate important updates about the App

4. Data Storage and Security

4.1 Local Storage Only

• Device Storage: All your migraine data is stored locally on your device only
• No Cloud Services: We do not use any cloud storage or synchronization services
• Device Security: Data is protected using your device’s built-in security features
• Complete Control: Only you have access to your data through the App

4.2 Security Measures

We implement appropriate security measures including:

• Secure local data storage using iOS standard encryption
• Regular security updates through app updates
• Limited data collection to minimize privacy risks
• No remote access to your personal health data

5. Third-Party Services

5.1 Analytics Services

We use Firebase Analytics to understand app usage and improve our services:

• Data Collected: App usage patterns, crash reports, performance metrics, and feature usage statistics
• Purpose: Improve app functionality, user experience, and identify technical issues
• Privacy: Your personal health data is never shared with Firebase Analytics
• Data Processing: Google processes this data according to their privacy policy
• Control: Analytics data is anonymized and cannot be linked to your personal identity

5.2 Subscription Management

We use RevenueCat for in-app purchase and subscription management:

• Data Processed: Purchase history, subscription status, payment transaction data
• Purpose: Manage premium subscriptions, process payments, and unlock premium features
• Security: All payment data is processed securely through Apple’s App Store
• Privacy: RevenueCat only receives purchase-related data necessary for subscription management
• Access: We only receive anonymized transaction data needed for service delivery

5.4 Local Notifications

We use local device notifications for reminders:

• Local Only: Notifications are generated by your device, not sent from our servers
• Control: You can disable notifications at any time through device settings
• No Data Transmission: No personal data is sent for notification purposes

5.5 Third-Party Data Processing

Important Notes:

• Firebase Analytics: Operated by Google LLC, processes data according to Google’s Privacy Policy
• RevenueCat: Operates independently and processes subscription data according to their Privacy Policy
• Apple App Store: Handles all payment processing and maintains its own privacy policies
• Data Minimization: Both services only receive the minimum data necessary for their specific functions

6. Data Sharing and Disclosure

6.1 No Sale of Personal Data

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

6.2 Limited Sharing Scenarios

We may share information only in these specific circumstances:

• With Your Consent: When you explicitly authorize sharing (e.g., data export for premium subscribers)
• Legal Requirements: When required by law, court order, or government request
• Safety Protection: To protect rights, property, or safety of users or others

7. Your Rights and Choices

7.1 Access and Control

You have the right to:

• Access: View all personal data we have about you
• Correction: Update or correct inaccurate information
• Deletion: Request deletion of your personal data
• Export: Download your data in a portable format
• Opt-Out: Disable analytics, notifications, or other optional features

7.2 Data Portability (Premium Subscribers Only)

• Export your migraine data in PDF or CSV format (premium feature)
• Maintain copies of your data for personal use
• Transfer exported data to other applications if desired

7.3 Account Deletion

To delete your account and all associated data:

• Use the “Delete All Data” option in App Settings
• Contact our support team for assistance
• Note: Deletion is permanent and cannot be reversed

8. Data Retention

8.1 Retention Periods

• Local Data: Data remains on your device as long as the app is installed
• No Remote Storage: We do not store your personal migraine data on our servers

8.2 Deletion Timeline

When you delete data:

• Immediate: Data removed from your device immediately

9. International Data Transfers

Since all data is stored locally on your device, there are no international data transfers. Your personal health information remains on your device at all times.

10. California Privacy Rights (CCPA)

California residents have additional rights:

• Right to Know: Categories of personal information collected and shared
• Right to Delete: Request deletion of personal information
• Right to Opt-Out: Opt-out of sale of personal information (we don’t sell data)
• Non-Discrimination: Equal service regardless of privacy choices

To exercise these rights, contact us using the information below.

11. European Privacy Rights (GDPR)

If you are in the European Economic Area, you have additional rights:

• Lawful Basis: We process data based on legitimate interests and consent
• Supervisory Authority: Right to lodge complaints with data protection authorities
• Limited Processing: We minimize data collection and processing

11. Medical Disclaimer

IMPORTANT NOTICE:

• This App is for informational and tracking purposes only
• It does not provide medical advice, diagnosis, or treatment
• Always consult qualified healthcare professionals for medical decisions
• We are not responsible for any health decisions made based on App data

14. Changes to This Privacy Policy

We may update this Privacy Policy periodically. We will:

• Notify you of material changes through the App or email
• Post the updated policy with a new effective date
• Continue to protect your data according to the updated terms
• Obtain consent for changes that materially affect data use

12. Contact Information

For privacy-related questions or concerns:

Website: mustafamiromerkalkan.com
Developer: Mustafa Mir Ömer Kalkan
Responsible Court: Malatya, Turkey

13. Legal Framework and Jurisdiction

This Privacy Policy is governed by:

• Turkish Personal Data Protection Law (KVKK)
• Apple App Store Privacy Guidelines

Jurisdiction: Any legal disputes shall be resolved exclusively in the courts of Malatya, Turkey.

14. Consent

By using our App, you consent to the collection and use of information as described in this Privacy Policy. You may withdraw consent at any time by discontinuing use of the App or contacting us.

---