"Every AI health app makes me explain myself from scratch."
It opens already knowing you.
A year of Apple Health history, your saved conditions and medications, and what you mentioned last time. Answers get more specific the longer you use it.
●Your Watch collects. Health.md explains.
Your ring gives you a score. This tells you what it means.
Health.md reads Apple Health, Apple Watch and Oura, remembers your history, and answers privately on your iPhone.
No accountNo analyticsiPhone 15 Pro+
No account
Nothing to sign up for, nothing to attach your data to.
Answers stay on device
Your iPhone, or Apple's stateless Private Cloud Compute.
No analytics
No trackers, no SDKs, no pixels. Airplane mode proves it.
Files you own
Stored as markdown you can open in the Files app.
What it does
Five things people kept telling me they wanted.
Each one started as a complaint about the health apps we already use.
"I am not typing my health history into someone's chatbot."
Your iPhone, or Apple's Private Cloud Compute. Nowhere else.
No account and no server of ours. One switch in Settings keeps everything on the phone.
Answered on this iPhone
"I always forget what I meant to ask my doctor."
Walk in with a one-page brief.
Visit prepOne page
TakingLisinopril, AtorvastatinSince last visitResting HR down 4 bpmWorth mentioningSleep dipped nine days running
Questions to askIs my blood pressure where you want it?Should the evening dose move earlier?
"I looked up one symptom and spent the night sure it was something terrible."
Built to inform you, not alarm you.
Every claim is checked against a source library before it reaches the screen. Symptoms get education, not an armchair diagnosis. A real red flag gets calm, direct guidance to seek care.
"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, tap any graph, and ask about it. It reads the same line you're looking at, in the context of everything else it knows.
Where your data lives
Your health, as files you can open.
Everything Health.md knows is stored on your iPhone as plain markdown in the Files app, excluded from iCloud backup. Read it, edit it, delete it. Nothing is hidden in a database you can't see.
How privacy works →
Why I'm building this
I buy ads for a living. I know exactly what happens to health data once it reaches a server.
When my Oura ring and Apple Watch started disagreeing and I couldn't read either, the obvious move was to ask an AI. Then I thought about where that question would land, and I closed the tab.
Health.md is the version I wanted to exist. It runs inside Apple's privacy boundary, has no account to attach you to, and carries no analytics. I'm building it in the open.
Preston Vawdrey
There is no Health.md account and no Health.md server. Your data is stored on the device as markdown files you can open in the Files app, excluded from iCloud backup. Answers are generated on the iPhone or inside Apple's Private Cloud Compute, which holds nothing after the request. Oura sync is the one third-party call, and only if you turn it on.
Be one of the first to use it.
The first TestFlight round goes to this list. Tell me which iPhone you have so I know who I can send a build to.
Private AI health, on your iPhone.Beta list is open.
Get early access