The app allows tracking of:
Key Point: All health data is stored locally on your device using Core Data. We do not have access to this information, and it is never transmitted to our servers.
When you use AI-powered food analysis features, the following data may be sent to external services for processing:
Key Point: Meal analysis data is only sent when you actively use these features (camera, text search, or barcode scanner). No images, food names, or barcodes are sent automatically or in the background. This data is processed transiently and is not stored on our servers after the response is returned.
Limited analytics collected:
Key Point: Analytics data excludes all health information and is anonymized before transmission.
Since data remains on-device, processing includes:
Anonymized data supports:
Device-stored using Apple's Core Data, protected by:
Encrypted in transit and at rest by Apple via CloudKit. We have no server access. Users control activation.
Important: HealthKit-sourced data is excluded from iCloud sync and remains on-device only.
Key Point: HealthKit data is accessed only on your device via Apple's approved HealthKit APIs. We do not transmit HealthKit data to our servers.
Control: You can change or revoke permissions via iOS Settings → Privacy & Security → Health → Tract.
Tract offers optional AI-powered features to help you log meals and understand their nutritional and dietary impact. These features require an internet connection and involve sending limited data to external services.
When you photograph a meal, the image is sent to our secure cloud proxy for AI-powered food identification. The image is used solely to identify foods and estimate nutrition data. Images are processed in real time and are not retained after the response is returned.
When you type food names, the text is sent to our secure cloud proxy to estimate nutrition and dietary compliance data (e.g., FODMAP levels, SCD classification). Only the food names you enter are sent—no health data, account information, or device identifiers are included.
When you scan a product barcode, the barcode number is sent to Open Food Facts, a public, open-source food product database, to retrieve product name, ingredients, and nutrition information. No personal data is sent with the request.
Key Point: No health data, personal identifiers, or device information is transmitted during meal analysis. These features are entirely optional and only activate when you explicitly use them.
Core Policy: We do not share, sell, or distribute your personal health information to any third parties.
Amplitude: Receives anonymized technical data only (app events, feature usage, performance metrics)—never health data.
Cloud Proxy: Meal photos and food names are processed through our secure cloud proxy for AI-powered food identification and nutrition estimation. Data is processed transiently and not retained.
Open Food Facts: Barcode numbers are sent to the Open Food Facts open-source database to retrieve product information. No personal data is included.
Occurs only when you explicitly choose to:
The app is not intended for users under 16. We do not knowingly collect information from children under 16.
Access Settings in the app and toggle "Usage Analytics" off. Your preference is saved immediately.
Amplitude maintains:
You maintain complete control:
We may update this policy with notifications via posting and updating the "Last Updated" date. Continued use of the app after changes constitutes acceptance of the updated policy.
Email: support@signalishealth.com
For privacy-related questions, data deletion requests, or concerns, please reach out via email.
Tract is for informational and tracking purposes only. It is not intended to diagnose, treat, cure, or prevent any disease. Always consult with qualified healthcare professionals regarding your health condition and treatment.