Of all the data on my devices, my Apple Health records make me the most uneasy about the cloud. Steps, sleep, resting heart rate, HRV — this is a detailed picture of my body across years. I started looking at what the popular health analytics apps were actually doing with it, and I didn't like what I found. Server uploads, third-party AI APIs, vague privacy policies. The data that should be most protected was the most freely shared.
The turning point was discovering Ollama — the idea that you could run a capable language model entirely on your own hardware, with no outbound connection at all. I realized there was no reason to send health data anywhere. My MacBook Air has more than enough compute to read my Health export, reason over months of trends, and write a meaningful summary. It just needed the right wrapper around it.
MirrorHealth is what I wanted to exist: a tool that treats your health data as private by architecture, not by policy. The AI never touches a server. The export file stays local. The insights it generates are genuinely personal — because they're generated on your machine, for you, with no one else in the loop.