This Privacy Policy describes how Symmi ("we," "our," or "us") collects, uses, and protects your information when you use our mobile application (the "App"). We are committed to protecting your privacy and being transparent about our data practices.
Important: This App processes facial biometric data exclusively on your device. Please read this policy carefully to understand how we handle this sensitive information.
Symmi collects the following facial data when you use the analysis features:
Facial landmark coordinates: Mathematical points representing facial features (eyes, nose, mouth, etc.) as normalized coordinates
Geometric measurements: Calculated distances, angles, and proportions between facial features
Symmetry calculations: Mathematical analysis results and asymmetry scores
Analysis visualizations: Generated overlay graphics showing facial measurements
Important: We do NOT collect or store:
Raw facial images permanently
Biometric identifiers for recognition purposes
Facial templates for identification
Any data that could identify you as an individual
Your facial data is used exclusively for:
Real-time facial symmetry analysis using Apple's Vision framework
Generating personalized beauty harmony reports with educational insights
Creating measurement visualizations to help you understand facial proportions
Providing personalized improvement suggestions based on your unique features
Educational purposes only - helping you understand facial anatomy and symmetry
AR FACE ANALYSIS FEATURE (TrueDepth API Usage)
What Data Is Collected via TrueDepth
When you use the AR Face Analysis feature, the app accesses your device'sÂ
TrueDepth camera system to capture:
- 3D facial geometry data (vertex positions from ARFaceAnchor)
- Real-time facial landmark positions in 3D space
- Live facial measurements (angles, distances, proportions)
- Temporary symmetry calculations for visual overlays
Important Limitations:
âś“ Used ONLY during active AR sessions
âś“ NOT used for Face ID or biometric authentication
âś“ NOT used for facial recognition or identification
âś“ No raw depth maps stored
âś“ No recordings or screenshots of your face saved
How AR Face Data Is Used
This TrueDepth data is used exclusively for:
- Real-time live facial measurement overlays
- Instant visual feedback on facial proportions and symmetry
- Educational visualization of facial geometry during AR sessions
- Interactive demonstration of facial analysis concepts
100% Real-Time Processing:
- All TrueDepth processing occurs in real-time on your device
- No face data is transmitted to servers during AR sessions
- Face geometry data exists only in device memory during active use
- All data is immediately discarded when you exit the AR feature
No Persistent Storage:
- 3D facial geometry is NEVER saved to device storage
- No AR session recordings or facial templates are retained
- Data is automatically cleared from memory when AR view closes
- Nothing from TrueDepth analysis is included in app backups
Camera and TrueDepth Permissions
The app requests camera access for two distinct features:
1. Photo-based Analysis (Standard Camera):
   • Uses standard camera to capture photos for Vision framework analysis
   • Photos can be saved if you choose
   • No TrueDepth sensors required
2. AR Face Analysis (TrueDepth Camera):
   • Requires devices with TrueDepth sensors (iPhone X and newer)
   • Accesses TrueDepth only during active AR sessions
   • No data retention after session ends
   • Optional feature - photo analysis works without it
100% On-Device Processing:
All facial analysis occurs locally on your iPhone/iPad using Apple's Vision framework
No facial data is transmitted to external servers or cloud services
No internet connection required for facial analysis features
Your photos never leave your device during the analysis process
Zero Third-Party Sharing:
We do NOT share facial data with any third parties
No integration with external facial recognition services
No sharing with advertising networks or data brokers
No selling, renting, or trading of facial information
Completely offline facial analysis system
Temporary Session Storage:
Facial landmark data is stored in device memory only during active analysis sessions
Original photos are automatically deleted from memory after analysis completion
Analysis results are retained only until you manually delete them or start a new analysis
No persistent storage of raw facial biometric data
User-Controlled Retention:
Analysis history and results: Retained until you manually delete them
You can clear all facial data at any time through app settings
Data is automatically purged when you uninstall the app
No automatic cloud backup of facial data
Local Processing Only: No transmission of facial data over networks
Automatic Memory Cleanup: Facial landmark data cleared when app closes
No File System Storage: Raw biometric data not saved to device storage
Apple's Security: Leverages Apple's Vision framework security protections
Questionnaire responses (age range, daily habits, preferences)
App preferences and settings
Optional feedback and support communications
Device information (iOS version, device model) - for compatibility
App usage analytics (features used, session duration) - anonymized
App performance data (crashes, errors) - for bug fixes
Subscription status and transaction IDs (managed by Apple App Store)
No payment card information is collected by us
App Functionality: Provide personalized recommendations based on your habits questionnaire
Customer Support: Respond to your questions and technical issues
App Improvement: Analyze usage patterns to enhance features (anonymized data only)
Legal Compliance: Meet legal obligations and protect user rights
❌ Facial recognition or identification
❌ Sharing with advertising networks
❌ Training external AI models
❌ Social media integration
❌ Background data collection when app is closed
❌ Creating user profiles for marketing
Habit questionnaire responses: Stored locally on your device
App preferences: Stored locally using iOS secure storage
Analysis history: Stored locally until you delete it
No server storage of personal information
No cloud backup of your data
No remote databases containing your information
All data remains on your device under your control
Device-Level Security: Data protected by iOS security features
No Network Transmission: Personal data never sent over internet
App Store Security: Leverages Apple's security infrastructure
Regular Updates: Security improvements delivered through app updates
View Your Data: Access all stored information within the app
Delete Data: Remove individual analysis results or all app data
Clear Cache: Remove all temporary data and reset app
Uninstall: Complete data removal by deleting the app
Disable Analytics: Turn off usage data collection
Camera Permissions: Control app access to camera and photo library
Notification Settings: Manage app notifications
Illinois Biometric Information Privacy Act (BIPA):
We obtain your explicit consent before collecting facial landmark data
We provide clear retention and destruction timelines (session-only storage)
We never sell or profit from biometric data
You have the right to legal remedies for violations
Other State Biometric Laws:
Full compliance with Texas, Washington, and other applicable biometric privacy laws
Consent-based collection with clear disclosure
California residents have these rights:
Right to Know: What information we collect (detailed in this policy)
Right to Delete: Request deletion of personal information (available in app)
Right to Opt-Out: We don't sell data, so no opt-out needed
Non-Discrimination: No negative treatment for exercising rights
EU residents have these additional rights:
Legal Basis: Facial data processing based on your explicit consent
Data Portability: Export your data in standard formats
Supervisory Authority: Right to complain to your local data protection authority
Withdrawal of Consent: Stop facial data processing at any time
Our App is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. The facial analysis features are designed for adult use only.
If you are a parent or guardian and believe your child has used our app, please contact us immediately so we can delete any collected information.
Data Processing Location:
All facial data processing occurs on your local device regardless of your location
No international data transfers of facial biometric information
App functionality identical worldwide - completely local processing
We may update this Privacy Policy to reflect changes in our practices or legal requirements. When we make changes:
Notification: We'll notify you through the app before changes take effect
Review Period: 30 days to review changes before they become effective
Continued Use: Continued use of the app indicates acceptance of updated policy
Version History: Previous versions available upon request
Email: nathanlinshuo@gmail.com