NeuroChecker
BetaGuided neurological self-tests at home — your phone turns everyday movements into objective data you and your clinician can follow.
Learn moreOpen-source healthcare, built in the open
5Health is an early-stage initiative building patient and clinician apps on an open, FHIR-based platform hosted in the EU.
9:415G
Good morning
Patient P-1042
2/3
2 of 3 done
Daily questionnaire still open
Finger tapping
DoneGait
DoneDaily questionnaire
DueLevodopa 100 mg
08:00
BP
128/78
HR
72
Steady hands · 7 days
Overview
What's inside
Our approach
Built in the open, for everyone
Three commitments shape every product we ship.
Global reach
5Health takes its name from the five inhabited continents — we build for people's health everywhere, not one market.
Open source
Every line of code is public, so anyone can read it, question it, or build on it.
Clinical focus
Built around real neurological function tests and the clinicians who review them, not abstract features.
AI
Two kinds of AI, both built to be checked
One measures movement from an ordinary phone video. One helps organise the day and runs on the phone itself. Neither of them diagnoses anything.
Movement analysis you can see
Machine-learning landmark models turn an ordinary phone video into objective signals — tap rate, rhythm variability, movement amplitude — and each recording is analysed again by a worker on our own servers.
- Finger tapping
- Rapid alternating hand movements
- A short gait test
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The landmark overlay replays on top of the video with its playhead synced to the signal plot, in the patient app and the clinician app alike.
You can see which moment produced which number, so it is not a black box you have to take on trust.
Nema, an assistant that runs on your phone
Nema helps with the day's medication, tasks, appointments and messages — by voice or by text, in German, English, French and Spanish. Anything Nema records for you is confirmed with you first.
- The conversation stays on the device.
- It refuses medical advice by rule, not by judgement.
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A small language model runs on the patient's own phone, so what you say to Nema is not sent to a cloud AI provider.
A deterministic safety check reads what you asked before the model is ever called, and turns down medical-advice and emergency questions. Nema is an organisational assistant — not a clinician, and not a medical device.
9:415G
Nema
Everyday assistant
What is left today?
One dose and one exercise left.
Today
Levodopa · 08:00
TakenLevodopa · 14:00
DueBalance exercise
OpenRecord the 14:00 dose as taken?
Confirm
Not now
Should I take an extra one?
I cannot advise on medication. I can message your care team.
Safety rule · before the model
Message care team
Start a test
Ask Nema
Projects
What we're building
Three real, running pieces of open-source healthcare software.
Medical Cockpit
BetaThe clinician's companion app — review patients' function-test videos and synced signal plots remotely, and correct results with confidence.
Learn more5Health Platform
ActiveThe open, FHIR-based backend behind NeuroChecker and Medical Cockpit — EU-hosted, self-hostable, and built on open standards.
Learn moreWhy it's different
Built to be trusted, not just used
The choices behind 5Health, not just the features.
EU hosting
Infrastructure runs in the EU, under EU data-protection law.
Open source
Every product's code is public and auditable.
Open standards
Built on FHIR R4 for clinical data — no proprietary formats, no lock-in.
No third-party tracking
Fonts are self-hosted, with no third-party trackers on this site.
News
Latest news
Updates from the 5Health initiative as the apps and platform evolve.
July 23, 2026
5Health is now public
Our two apps are in beta and the open platform behind them is in production. Here is what we built — and how you can look inside.
Read the code. Try the apps. Tell us what you think.
5Health is open source and still early-stage — there is nothing to sign up for, just working, public code.