The health AI that already knows you, and keeps it to itself.

Five things people kept telling me they wanted.

“Every AI health app makes me explain myself from scratch.”

It opens already knowing you

Health.md holds your Apple Health history, a year of it, alongside the conditions and medications you have saved and the things you mentioned in earlier conversations. Answers get more specific the longer you use it, because it is reasoning against your actual picture rather than a blank page.

“I am not typing my health history into someone's chatbot.”

Your iPhone, or Apple's Private Cloud Compute. Nowhere else.

There is no account and there is no server of ours. Every answer is composed on your device or inside Apple's Private Cloud Compute, which is stateless and cryptographically attested. One switch in Settings keeps everything on the iPhone, and airplane mode proves it.

“I always forget what I meant to ask my doctor.”

Walk in with a one-page brief

As you use it, Health.md quietly assembles the picture: your conditions, your medications and how consistently you take them, your trends, the notes you left yourself. Visit prep turns that into a single page carrying your numbers and the questions worth asking.

Visit prep

One page

Taking

Lisinopril, Atorvastatin

Since last visit

Resting heart rate down 4 bpm

Worth mentioning

Sleep dipped for nine days in a row

Questions to ask

• Is my blood pressure where you want it?
• Should the evening dose move earlier?
• Does the sleep change matter here?

Example layout. Your own brief is built from what you have saved.

“I looked up one symptom and spent the night sure it was something terrible.”

Built to inform you, not to alarm you

Answers are composed from a source library and checked claim by claim before they reach the screen, and anything that fails that check is dropped rather than shown. Symptom questions get education instead of an armchair diagnosis. A genuine red flag gets calm, direct guidance to seek care, and it replaces everything else on screen.

“My ring hands me a score every morning. It never says what to do with it.”

Your Watch collects. Health.md explains.

Connect Apple Watch and Oura, then tap any graph and ask about it. Health.md reads the same numbers you are looking at, in the context of everything else it already knows, and tells you what the shape of the line actually means.

Questions worth asking

Is it actually private, or just private-ish?

There is no Health.md account and no Health.md server. Your health data is stored on the device as markdown files you can open in the Files app, and it is excluded from iCloud backup. Answers are generated on the iPhone or inside Apple's Private Cloud Compute, which holds nothing after the request. If you connect Oura, that sync is the one third-party call the app makes, and only if you turn it on.

Does it give medical advice?

No. Health.md explains things and helps you prepare for a real appointment. It declines to diagnose and it declines to give dosing. Every answer carries a standing note that you should review any medical decision with a licensed clinician.

What do I need to run the beta?

An iPhone 15 Pro or newer on iOS 27. That is the Apple Intelligence requirement, and the on-device models will not run without it. If your phone is older you can still join the list, and I will email you when it qualifies.

When does the beta actually start?

The chat pipeline has been running on a device since July and the remaining work is the markdown vault, document import and reports. I would rather send you a build worth using than hit a date, so the list is how you find out the moment TestFlight opens.

What happens to my email address?

It goes on one list, used to tell you when the build is ready and occasionally what I am working on. One unsubscribe link, no selling it to anyone, and I read the replies myself.