CAPABILITY SHOWCASE · AI-NATIVE APPS

Your health records,
private by design.

Health Vault is a personal health-record app I built end to end: every lab result, medicine and doctor visit stays encrypted on one machine — graded against real clinical guidelines and explained by a local AI, never a server.

This is a capability build, not a product for sale — built to show what "AI-native, privacy-first" looks like when it's actually shipped.
The problem with most health apps

They ask you to trust a company. Health Vault doesn't ask.

Every mainstream health-tracking app is a cloud product first — your labs, your medicines, your history sit on someone else's server the moment you use it. Health Vault flips that by design.

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Where does my data actually go?

Nowhere. Every reading, report and note is encrypted on your own machine. There's no server to breach, sell to, or shut down.

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Who's grading my results?

A deterministic rules engine — not an AI guess — citing the actual clinical guideline behind every grade: ADA, AHA/ACC, US NCEP ATP III, or your own lab's printed range.

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How do I know nothing left the machine?

A full access log records every action taken on the vault — never the health data itself — so "private" is provable, not just promised.

Full walkthrough

Watch the whole journey, end to end

Four minutes: one doctor's visit, through tests, medicines and a lab report, to a health score — every step on one machine.

Presenter is an AI avatar; the screens are the real application running on a sample profile.

Walkthrough

What's actually inside

Six real screens from the app, running on a sample profile.

Health Vault overview dashboard
Overview

Everything that needs attention, on one screen

Due-soon reminders, the six numbers that matter most, and a plain-English summary of what changed since the last reading — before you dig into anything.

What the AI adds: writes the "what your record shows" summary from figures the rules engine already classified — it's told not to introduce a threshold of its own.
Health Vault results graded A to D
Results

Every lab value, graded and sourced

Each result gets an A–D grade from a deterministic engine — "no AI, and no threshold that isn't already in the engine" — and every grade names its source: a published guideline, or the reference range your own lab printed.

Why it matters: you can trace any grade back to where it came from, instead of trusting a black box.
Health Vault health score panel
Health score

Two honest answers to "how am I doing"

A transparent 0–100 index built from a fixed 8-part panel — and, separately, the published metabolic-syndrome definition. Neither pretends to diagnose anything; both explain exactly how they got their number.

Detail that builds trust: the trend chart marks points where fewer than half the panel was measured, so early data gaps are never mistaken for improvement.
Health Vault medicines and adherence tracking
Medicines

Adherence, interactions, and honest limits

Daily adherence tracked over 7/30/90 days without punishing unanswered days, plus interaction checks against NHS/MedlinePlus sources — always framed as "worth asking your doctor," never a diagnosis.

Worth noting: the app is explicit about what it can't check — "nothing flagged does not mean your list is clear."
Health Vault health story and symptoms
Health story

The half of a record a lab test never captures

Symptoms, conditions, doctor visits — self-reported and entirely yours to state or remove. Nothing here is inferred from a result; the app never ticks a box on your behalf.

Health Vault access log
Activity log

Proof, not a privacy policy

Every action on the vault is logged — what was read, what was computed, every login attempt — with a hard rule: the log records what happened, never the health data itself.

Why it's here: "private by design" is a claim every app makes. This is what it looks like to show your work.
Architecture

Local-first, end to end

Nothing about this is a cloud product with a privacy toggle. It's built local-first from the ground up.

Encryption

Encrypted per profile, on-device

Every vault unlocks with its own passphrase. There is no master key and no admin account — not even for the person who built the app.

Local AI

The AI runs on the machine, too

Explanations come from a local model (llama3.2:3b) — not an API call. Nothing about a health record is sent to a third party to get a plain-English summary.

Document reading

Lab reports never leave the device

PDFs and photos of lab reports are read locally and the extraction method is shown — text-exact or OCR — alongside the result count pulled from each one.

Caregiver access

Access is granted, named, and revocable

A caregiver model with no shortcuts: one named profile can open another named profile's record, every grant is visible to the owner, and any grant can be ended individually.

Want something like this built for you?

Health Vault is a capability showcase — proof of how DM AI Labs builds AI-native apps that are honest about their limits and serious about privacy. If your business handles data people care about protecting, that's exactly the kind of problem worth a conversation.

Book a free 30-minute call