FIELD

FIELD is a privacy-first sensor companion for iPhone: one calm interface for seeing, hearing, measuring context, and comparing observations over time.

The product is deliberately honest about the boundary between a direct sensor reading, an AI interpretation, and a measurement that requires an external instrument.

Repository map

• ios/ — native SwiftUI app for iPhone 17 Pro and real sensor access
• web/ — deployed interaction prototype
• shared/ — contracts shared between clients and the future AI service
• backend/ — reserved boundary for cloud interpretation services

Try the current prototype

The private web prototype is available at field-tricorder-lab.cseelus707334.chatgpt.site.

Native quick start

1. Open ios/FIELD.xcodeproj in Xcode 26 or later.
2. Select the FIELD scheme and an iPhone running iOS 18 or later.
3. Choose your personal development team under Signing & Capabilities.
4. Build and run. Approve only the sensors you want to test.

The first native slice includes a real ARKit/LiDAR camera surface, live microphone level, motion, heading, location, and barometric context. Its AI synthesis remains a clearly labeled guided demo until the backend is connected.

Cloud-first workflow

Routine implementation, web builds, source review, and non-Apple tests can run in Codex cloud. Configure the repository environment with:

./scripts/cloud-setup.sh

Codex cloud uses Linux containers and cannot run Xcode. Native compilation can be delegated to the manual GitHub Actions workflow in .github/workflows/native-ios.yml; signing and real-sensor testing stay on a Mac and physical iPhone.