Private Health Journal

One key · one phone · one person

Your key. Your record. Copies go out one at a time.

Every record is sealed with a key made on your phone and never sent to us. Hand a copy to a doctor. Take it back, and the key is re-cut.

Your account and billing details are not sealed — we have to read those to run the service, and we would rather say so here than have you find out later.

Your keynever leaves this phoneLab resultsVaccinationsDental chartDr. Paracelsusholds a copyopens onceClinic Nordholds a copyuntil revokedsolid = your keydashed = a copy you handed out

Two copies are out. Dr. Paracelsus received a copy that opens once and then never again. Clinic Nord holds one that works until you take it back.

A private health journal · on your phone

Your family's health history, sealed on your phone.

Results, medications, vaccinations, dental, growth and emergency details — captured offline, kept in one place, for everyone you look after.

Get the app

Today · Anna

Haemoglobin132 g/L
HbA1c5.4 %
Blood pressure118/76
Next vaccinationOct 2026
Medications2

Capture · seal · share · carry

Four steps, and the last one is the point.

Doctors change. Clinics change. Phones change. Countries change. The record is built so that none of those events ends it.

01 Capture

Photograph it instead of typing it

A lab sheet becomes structured values on the device — and nothing is saved until you confirm it.

02 Encrypt

Only you can open it

Records are encrypted before they leave the phone, with a key that stays with you.

03 Share

Hand over a copy. Take it back.

Grant access to a doctor, then revoke it — which deletes the grant and re-cuts your key.

04 Carry

Leave with everything

A password-protected PDF works today. A machine-readable archive is being built.

Swipe sideways, or use the arrows

Act II — what it does

The complete list of what the application does.

Lab results with reference bands and trends237 test definitions with canonical parameters; a cited source appears where the catalogue carries one.Shipped
Vaccinations, schedules and certificatesForecasting, dose timeline, certificate wallet, travel checklist, reminders scheduled on the device.Shipped
Vitals, symptoms and diagnostic studiesWith freshness, red-flag guidance and crisis contacts that never sit behind a paywall.Shipped
Dental chartAdult, deciduous and mixed dentition, FDI and Universal notation.Shipped
Child growth on WHO percentiles, and cycleGrowth, milestones, cycle insights, and encrypted sharing with a partner.Shipped
Family profiles and emergency cardSeparate profiles for the people you care for, each with its own key.Shipped
Senses, screening schedules and custom testsVision acuity, smell, taste, balance; screening forecasts; and tests you define yourself.Shipped
Export as a password-protected PDFGenerated offline, in your language, with your national ID and policy number left out.Shipped
MedicationsYour list and sharing work. Turning a photographed prescription into structured entries does not yet.In development
A list of who holds a copy, with a revoke buttonRevocation works today and re-cuts your key. The screen that lists every live copy is being built.In development
Documents and attachmentsNo document vault yet. Photographs attach to insurance cards only.Planned
One merged timeline across every recordActivity history and medical history exist separately. Merging them is the next core piece.Planned

Capture

Photograph a lab sheet. Nothing becomes a medical fact until you confirm it.

Text recognition runs on the device. Each line is claimed by the analyte with the longest matching alias, so a value reported as “PLT” always lands on platelet count in the right unit — with the original value and unit kept beside it, always.

Where this stops: reports in Latin script are read on the device. Cyrillic reports are not read yet.

Recognised

Platelet count

253 × 10⁹/L

As the lab wrote it: PLT 253 10^9/L

Nothing is saved until you confirm it.

Act III — what it holds

Sealed before it leaves. Not sealed after we promise.

The key is made here

Records are encrypted on the device with a key held per profile. What reaches the server is ciphertext it has no way to open.

A microphone with the wire cut

Speech recognition runs on the device with the network path disabled — not local by preference, but with no fallback by which audio could go anywhere.

It leaves in a sealed envelope

Export is an AES-256 password-protected PDF generated offline, with your national ID and policy number deliberately left out.

Where the seal stops: the sync envelope, your identity and your billing details stay readable to us. Conflict detection needs the first; running a service needs the others.

Get the application

One record, on whichever device you actually use.

iPhone and iPad

iOS 15.5 or later. Sealed on the device, synced encrypted.

Download on the App StoreDownload on the App Store

Android

Android 8.0 or later. Same record, same keys.

Get it on Google Play

In your browser

Open your record on a laptop. Your key is handed over from the phone by QR, and never stored on the server.

Open the web app

Linux

A packaged desktop build for people who keep their archive on a machine they control.

Not built yet

Apple and the Apple logo are trademarks of Apple Inc.; App Store is a service mark of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.

One account across all of them. The record is sealed on whichever device created it, and the key travels only when you move it yourself.

The Journal

Plain answers to the questions people arrive with.

2026-08-18 · Understanding results

What a reference range actually is

Why two laboratories can report the same blood in different units and both be right — and why the issuing lab's range always wins.

2026-08-11 · Keeping records

How to build a health history from a shoebox of paper

A practical order of work: what to photograph first, what to type by hand, and what is safe to leave undone for now.

2026-08-04 · Privacy

What end-to-end encryption does and does not cover

A short, honest map of which parts of a health record can be sealed, which cannot, and why claiming all of it overstates.

2026-07-28 · Vaccination

Reading a vaccination schedule that changed country

National schedules disagree on names, intervals and dose counts. How to line up what you had against where you live now.

2026-07-21 · Families

Keeping a record for a parent without taking over their life

Where help ends and control begins, and how to set up access the person themselves can withdraw at any moment.

2026-07-14 · Before a visit

The four things worth writing down before an appointment

Structure, not guesswork: what changed, what you take, what you reacted to, and what you want answered.