🔐 Secret File Box - Privacy Policy

📅 Last Updated: June 11, 2025

🏷️ Tags: Privacy Policy | iOS App | Data Security | User Privacy

📋 Overview

🚫 Information Collection and Use

❌ Information We Do NOT Collect

💡 Privacy Commitment: We adhere to the “zero collection” principle and do not collect any user personal information

• 🆔 Personal Identity Information: We do not collect names, emails, phone numbers, etc.

• 📍 Location Information: We do not access or collect geographical location data

• 📱 Device Information: We do not collect device identifiers, models, etc.

• 📊 Usage Data: We do not collect app usage habits or behavioral data

• 👥 Contacts: We do not access contact information

• 🌐 Network Data: The app runs completely offline

💾 Locally Stored Information

• 📁 File Data: Files and media content you import

• 🔑 User Passwords: Stored using advanced encryption algorithms

• ⚙️ App Configuration: Settings and preference configurations

🔒 Data Security and Encryption

🛡️ Encryption Protection

🔐 Encryption Standard: Uses military-grade AES-256 encryption algorithm

• ✅ File Encryption: All user files are encrypted with AES-256

• ✅ Password Security: Passwords are stored using secure hash algorithms

• ✅ Key Management: Encryption keys are generated and stored locally only

🚪 Access Control

• 🔐 Dual Password: Real password + Decoy password

• 🔒 Auto Lock: Automatic lock when backgrounded to prevent unauthorized access

• 👤 Multi-layer Verification: Multiple authentication mechanisms

☁️ iCloud Sync (Optional)

📤 Sync Description

⚠️ Note: iCloud sync is an optional feature, completely controlled by users

• 🔄 Optional Enable: Users can choose whether to enable iCloud sync

• 🔐 Remains Encrypted: Synced data remains encrypted

• 🚫 Cannot View: Neither Apple nor we can view file contents

🎛️ User Control

• ✅ Toggle Anytime: Can enable or disable sync at any time

• 🗑️ Data Deletion: Can delete iCloud sync data at any time

• 📱 Local Priority: Only saved locally after disabling sync

🔑 Permission Usage

📷 Camera Permission

• Purpose: Take photos and videos for encrypted storage

• Control: Can be revoked anytime in system settings

🖼️ Photo Library Permission

• Purpose: Import files from photo library and export files to photo library

• Control: Can be revoked anytime in system settings

📂 File Access Permission

• Purpose: Import and manage various types of files

• Control: Can be revoked anytime in system settings

🌐 Network Permission

• Purpose: Only used for iCloud sync feature (if enabled)

• Control: Can control network access in system settings

📊 Data Retention and Deletion

🗃️ Data Retention

🗑️ Data Deletion

• ✅ In-App Deletion: Delete any file at any time

• ✅ Uninstall Cleanup: Uninstalling the app deletes all local data

• ✅ iCloud Cleanup: Must be manually deleted in iCloud settings

🔗 Third-Party Services

🏢 Third-Party Services Used

🎯 Minimization Principle: Only use necessary third-party services

🚫 Services NOT Used

• ❌ Analytics services

• ❌ Advertising services

• ❌ Data statistics services

• ❌ Third-party cloud storage

👶 Children’s Privacy

⚠️ Age Restriction: This app is not specifically designed for children under 13

• 🚫 We do not knowingly collect personal information from children under 13

• 👨‍👩‍👧‍👦 If we discover a child has provided personal information, please contact us to delete it

• 📞 Parents or guardians may contact us at any time

🌏 Cross-Border Data Transfer

🏠 Local Priority: Data is not transferred across borders to any external servers

• ✅ Completely Local: App runs completely locally

• ✅ Optional Sync: Only iCloud sync (user choice)

• ✅ No External Servers: No data transmission to any external servers

🛡️ Security Measures

🔒 Technical Security Measures

🔐 End-to-End Encryption
├── AES-256 Encryption Algorithm
├── Local Key Generation
└── Secure Hash Storage

🏠 Local Storage
├── No uploads to external servers
├── Device local encryption
└── Offline operation mode

🚪 Access Control
├── Multi-layer password protection
├── Automatic lock mechanism
└── Principle of least privilege

🔍 Code Security
├── Regular security audits
├── Timely security updates
└── Open source transparency principle

📝 Privacy Policy Changes

🔄 Update Mechanism

📢 Notification Method: Notify users of major changes through in-app notifications

• 📅 Regular Review: Regularly review and update privacy policy

• 📢 Timely Notification: Promptly notify users of major changes

• 📖 Recommended Reading: Users are recommended to regularly check the latest version

⚖️ User Rights

📋 Rights You Enjoy

🎯 User First: You have complete control over your data

📞 Contact Us

💬 Contact Methods

🤝 Always Available: We are always here to help you

• 📱 In-App Feedback: Settings page → Feedback & Suggestions

• 📧 Email Contact: jiangkang0504@gmail.com

• ⏰ Response Time: We will reply as soon as possible after receiving your inquiry

📝 Feedback Content

• ❓ Privacy policy questions

• 💡 Improvement suggestions

• 🐛 Bug reports

• 🔒 Security issues

🎯 Important Statement

🔐 Core Philosophy: Protecting user privacy is our core design philosophy

📜 Our Commitment

🔒 Zero Collection Commitment
├── Do not collect personal information
├── Do not store user data
└── Do not transmit to external servers

🛡️ Security Guarantee
├── End-to-end encryption
├── Local storage
└── Multi-layer protection

🎛️ User Control
├── Complete autonomy
├── Delete anytime
└── Transparent and open