Privacy Policy

1. Native iOS Document Processing

ScanFlow utilizes Apple's native frameworks for superior document processing with complete privacy protection:

On-Device Processing

• Apple Vision Framework: Real-time document detection with 100% on-device processing
• Core Image Framework: Native perspective correction and image enhancement
• PDFKit Integration: Native iOS PDF generation and multi-page document creation
• Local Processing Only: All document analysis happens exclusively on your device
• No Cloud Processing: Your documents never leave your device for processing
• Gallery Import: Process photos from your gallery with the same privacy standards
• Swift Native Modules: Performance-optimized native iOS processing

2. Data Collection and Storage

ScanFlow processes and stores the following data types exclusively on your iOS device:

Document Data

• Document Images: Photos captured with the camera or imported from gallery
• Processed Images: Perspective-corrected and enhanced versions using Core Image
• PDF Documents: Multi-page PDF files generated with iOS PDFKit
• Detection Data: Document corner coordinates and confidence scores

User Preferences

• App settings and scanning configurations stored in iOS AsyncStorage
• Processing history and recent scan metadata stored locally for quick access
• Gallery access records for selected photos processed with privacy standards
• Custom scan presets and document organization preferences

Storage Location: All documents and data are stored exclusively on your iOS device using secure file system storage. No cloud processing or remote storage is used.

3. iOS-Native Technology Stack

ScanFlow is built exclusively for iOS using Apple's native frameworks and security measures:

Core Technologies

• React Native 0.80.1: iOS-focused mobile development with TypeScript
• Apple Vision Framework: Native document detection with hardware acceleration
• Core Image Framework: Apple's advanced image processing for perspective correction
• Swift Native Modules: EdgeDetectionModule.swift and PerspectiveCorrectionModule.swift
• PDFKit: Native PDF creation and manipulation capabilities

Security Architecture

• iOS Security: Benefits from iOS sandboxing and app security architecture
• Local File System: iOS secure storage with no external data transmission
• Hardware Acceleration: Utilizes iOS GPU and Neural Engine for processing
• Memory Management: Automatic cleanup of temporary processing data

4. iOS Permissions and Access

ScanFlow requires specific iOS permissions for document scanning functionality:

Camera and Photo Access

• Camera Access (NSCameraUsageDescription): Required for capturing document photos using VisionCamera
• Photo Library Access (NSPhotoLibraryUsageDescription): Enables import from gallery feature
• Photo Library Add (NSPhotoLibraryAddUsageDescription): Allows saving processed documents to Photos app
• Local File Storage: iOS app sandbox for storing processed documents and PDFs

Permissions NOT Required

• No Location Access: App does not request or use location services
• No Microphone Access: Audio permissions are not required or requested
• No Contacts Access: No access to personal contact information
• No Network Access: No internet connection required for core functionality

All permissions are used exclusively for document scanning and processing. No personal data beyond your selected documents is accessed or processed.

5. Document Security and Privacy

Your document security is our highest priority:

Privacy Guarantees

• 100% Local Processing: Documents never leave your device
• No Cloud Backup: Documents are not automatically backed up to cloud services
• No Sharing: No automatic sharing or transmission of document data
• User Control: Complete control over document storage and sharing

Data Protection

• iOS file system encryption protects stored documents
• Automatic cleanup of temporary processing files
• Secure deletion when documents are removed
• No persistent logging of document content

6. User Rights and Control

You have complete control over your documents and data:

• Document Access: Full access to all your scanned documents
• Export Control: Choose how and where to share documents
• Deletion Rights: Permanently delete documents from the app
• Settings Management: Control app behavior and processing preferences
• Permission Revocation: Revoke camera or photo access at any time

7. Third-Party Services

ScanFlow operates with minimal third-party dependencies:

• No Analytics Services: No user behavior tracking or analytics
• No Cloud Services: No third-party cloud processing or storage
• No Advertising: No ad networks or marketing services
• App Store Only: Updates and distribution through official Apple App Store

8. Business and Professional Use

ScanFlow is suitable for business and professional document processing:

• Confidential document processing with complete privacy
• No data sharing with external services or platforms
• Compliance with business privacy requirements
• Professional-grade security for sensitive documents

9. Contact Information

For privacy questions about ScanFlow: