Privacy / local-first
Swift · macOS · CLI · CODEX_HOME
Open source · macOS
AI Health Sync
HealthKit data moves from iPhone to Mac over the local network.
- Swift
- HealthKit
- Local network
$ trace "ai-health-sync"
- iPhone
- HealthKit
- local network
- Mac
The problem
Health data is useful across devices, but sending it through a hosted service creates a trust boundary that does not need to exist.
The constraint
The system has to remain useful without turning personal health context into a cloud dataset.
The approach
A Swift tool syncs Apple HealthKit data between an iPhone and a Mac over the local network.
The outcome
The privacy decision is visible in the architecture: your health data stays on your machines.
MN://WORK
More work
iOS / ON-DEVICE · In App Store review
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Privacy / local-first
Swift · SwiftUI · SwiftData · On-device OCR
In App Store review · v1.0
TEACHING / STOICISM
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A 12-week Stoicism course in Brazilian Portuguese that runs entirely in the browser and keeps every note on the reader’s own device.
Privacy / local-first
Vanilla JS · PWA · Service Worker · Cloudflare Workers
Live · source private