Show HN: Metrya – Private HealthKit AI advisor with your own LLM key

Category: devtools

Tags: health-tech, privacy-first, mobile-app, ai-assistant, quantified-self

Score: 6.7/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 6)

Metrya is an iPhone app that serves as a private AI health advisor by analyzing local Apple Health/HealthKit data (sleep, heart rate, activity, etc.) and sending only relevant data windows to user-provided LLM APIs (OpenAI, Claude, Gemini) for personalized insights. It's interesting because it maintains strong privacy by keeping all health data on-device, offers one-time purchase pricing, and includes novel on-device features like anomaly detection and recovery scoring without requiring cloud AI.

Target audience: health-conscious individuals, quantified-self enthusiasts, iOS users with wearables

Repository: https://metrya.app/

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