Solair AI vs MetricBridge: on-device Apple Health Q&A, and the agent bridge only one ships
Two on-device apps answer questions about Apple Health without sending data to the cloud. Solair AI is free, reads 15+ HealthKit metrics, runs 60+ on-device models, and never needs an account. MetricBridge answers the same questions and adds a provenance card showing the exact numbers behind each answer, then exports 190 metrics and points a zero-dependency MCP server at them so Claude, Cursor, or your own scripts can read the same data.
The honest split:
- Free, on-device chat: Solair AI, and it is good at exactly that.
- Answers you can audit: MetricBridge's provenance card.
- Letting your health data power other agents: only MetricBridge, over MCP.
If all you want is chat, either works. The bridge is what separates them.
Full comparison: https://www.healthexport.dev/blog/solair-ai-vs-metricbridge?utm_source=devto&utm_medium=social&utm_campaign=exp-20260929-hea164-solair
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