# Privacy Policy for DeepFlight
**Last updated:** August 9, 2026
**DeepFlight** ("we", "our", or "us") is developed by **Gao Ming**. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application **DeepFlight** (the "Application").
Please read this Privacy Policy carefully. If you do not agree with the terms of this Privacy Policy, please do not access the Application.
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### 1. Information We Collect
We collect information to provide better services and core features to our users. Depending on how you use DeepFlight, we may collect the following types of information:
#### A. Location Data
- **Precise & Coarse Location (GPS and Network-based):** DeepFlight may request access to your location data to display your current position on the flight map, calculate flight routes, and provide location-based immersive focus experiences.
- **Control:** You can enable or disable location services at any time through your mobile device settings.
#### B. Financial & Purchase Information
- **In-App Purchases & Subscriptions:** When you purchase subscriptions or Pro features in DeepFlight, transactions are processed directly by **Google Play Billing** and managed via **RevenueCat**. We do not store or collect your payment card details, bank account numbers, or billing addresses directly. RevenueCat collects anonymous user identifiers and purchase receipts to validate subscription status.
#### C. Audio & Device Usage Data
- **Foreground Audio & Service Usage:** DeepFlight uses background and foreground service permissions (`FOREGROUND_SERVICE_MEDIA_PLAYBACK`) to play ambient white noise and audio during your focus sessions.
- **Device & Technical Information:** We may collect device model, operating system version, app version, and basic performance diagnostic logs to troubleshoot crashes and improve app stability.
#### D. Notifications
- DeepFlight may request permission (`POST_NOTIFICATIONS`) to send you focus timer alerts, takeoff/landing notifications, and ambient sound controls.
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### 2. How We Use Your Information
We use the collected information for the following purposes:
- **To Provide Core Features:** To run the focus timer, render interactive flight maps, play ambient audio, and customize your flight focus experience.
- **To Manage Subscriptions:** To unlock Pro/VIP features, verify membership status, and manage active subscriptions through RevenueCat and Google Play.
- **To Improve the App:** To diagnose technical bugs, optimize performance, and enhance user experience.
- **To Communicate with You:** To provide customer support and respond to user inquiries via email.
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### 3. Third-Party Services & SDKs
We may share your data with trusted third-party service providers solely to facilitate our Application services:
1. **Google Maps SDK / Google Play Services**
- **Purpose:** Map rendering, flight route visualization, and location services.
- **Privacy Policy:** [Google Privacy Policy](https://policies.google.com/privacy)
2. **RevenueCat**
- **Purpose:** In-app purchase validation and subscription management.
- **Privacy Policy:** [RevenueCat Privacy Policy](https://www.revenuecat.com/privacy/)
3. **Google Play Billing**
- **Purpose:** Payment processing for digital subscriptions.
We do **NOT** sell, rent, or trade your personal information to third parties for advertising or marketing purposes.
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### 4. Data Retention and Account/Data Deletion
- **Retention:** We retain data only for as long as necessary to provide you with the services described in this policy or as required by law.
- **Data Deletion Rights:** You have the right to request the deletion of any personal data associated with your use of DeepFlight. Since we do not require account registration, most app preferences and focus statistics are stored locally on your device and can be cleared by uninstalling the app or clearing app data in your device settings.
- **Requesting Data Deletion:** If you wish to request deletion of any remote transaction or support records, please contact us at **qq185083715@gmail.com**. We will process your request within 30 days.
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### 5. Children's Privacy
DeepFlight is not directed to children under the age of 13 (or under 16 in certain jurisdictions). We do not knowingly collect personal information from children. If you become aware that a child has provided us with personal information without parental consent, please contact us at **qq185083715@gmail.com**, and we will promptly delete such information.
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### 6. Data Security
We implement reasonable technical and organizational measures to protect your data against unauthorized access, loss, or misuse. However, please be aware that no security system is 100% impenetrable.
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### 7. Changes to This Privacy Policy
We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date at the top. You are advised to review this Privacy Policy periodically for any changes.
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### 8. Contact Us
If you have any questions, feedback, or data privacy requests regarding this Privacy Policy, please contact us at:
- **Developer:** Gao Ming
- **App Name:** DeepFlight
- **Support Email:** qq185083715@gmail.com