READINESS FOR PROFESSIONAL DRIVERS
A driver who can see it coming can do something about it.
HealthDrive reads your sleep, your body clock and your heart rhythm, and turns them into one honest number — how ready you are for the shift ahead.
A wellbeing product. It describes your body — it never tells you whether you're fit to drive.
THE PROBLEM
Tachographs record hours. Hours are not readiness.
Two drivers, one record
Same shift, same legal hours. One slept seven hours; one slept four and started at 3am. The record shows them as identical.
The body clock is invisible
A night driver's hardest hour is set by circadian biology, not the rota. Nothing in the cab shows them where it falls.
Monitoring feels like surveillance
Systems built for the operator watch the driver. That frames the person as the hazard, and nobody wants to wear it.
HOW IT WORKS
Two engines, one honest number.
PREDICTIVE
Flightdeck
Your sleep, your body clock and your hours, resolved into a readiness curve for the day ahead. Works with nothing but your phone.
REAL-TIME
Cadence.AI
Pair a heart sensor and Cadence follows your beat-to-beat rhythm through the shift, correcting the prediction as the day actually unfolds.
The app always tells you which engine it's using. Predicted, confirmed, or provisional. Never a blended number of unknown origin.
FLIGHTDECK
The day, as your body sees it.
A circle, not a chart
On nights, a timeline that starts at “now” crops the very hours that matter. A 24-hour circle doesn't.
The overlap is the point
Where your shift meets your body-clock low is the one thing you can plan around before it arrives.
Every factor opens up
How much of today it accounts for, which way it's pulling, your own figure behind it, and what actually moves it.
CADENCE.AI
The shift, beat by beat.
Pair a heart sensor and Cadence comes alive — an orb breathing at your own heart rate, a live trace, and signal quality in view.
EVERY MINUTE, ON YOUR PHONE, WITH NO NETWORK
- Artefact correction
- Signal-quality gate
- 22 HRV features
- Trajectory over 20/40/60 minutes
- Measured against your own baseline
- Abstains when it can't be sure
PERSONAL BASELINES
Everybody's normal is different.
Resting heart-rate variability varies enormously between healthy people — comparing you to a population average throws away most of the signal. Cadence measures you against your own baseline, for your own time of day. A flat baseline compares your 4am with your 4pm and calls the difference fatigue.
WHAT WE REFUSE TO DO
The hard part isn't reading a heart rate. It's knowing when the sensor is wrong.
A moving vehicle produces exactly the kind of plausible-looking noise that turns into a confident wrong answer. When signal quality drops, Cadence stops scoring, falls back to the prediction, and says so on screen.
It abstains
No score is better than a made-up one.
It won't fake precision
Some sensors only report an averaged heart rate. We won't turn that into beat-to-beat data it never measured.
It stays quiet
Nudges need agreement across several readings, and there's a long quiet period between them. Never while you're moving, unless you asked for it.
WHAT YOU NEED
Start with your phone. Add a sensor if you want more.
| Sensor | What you get |
|---|---|
| Your phone alone | Full predictive readiness from sleep and hours |
| Most smartwatches | Live heart rate, trends and sleep timing |
| Polar armband (Verity Sense, OH1) | Beat-to-beat intervals — the full live engine, no chest strap needed |
| Polar chest strap (H10, H9) | Beat-to-beat intervals at the highest accuracy |
Optical sensors aren't equivalent to a chest strap, and we tag every reading with where it came from.
YOUR DAY
Your own record, kept your way.
Set your state with one tap — off duty, on duty, driving, or on a break. Or let the app notice for you.
It knows when you leave and when you're back
Using one home area you set yourself, which never leaves your phone.
It knows when you're driving
From your phone's motion sensor, which produces no location data at all.
It can only ever count against us
The app can log driving time automatically. It can never automatically credit you a break.
Every automatic change is a suggestion you can accept or correct. Nothing is logged behind your back.
WINGMAN SAM
Someone to talk to at 3am.
Long hours alone, nights away from home, few chances to talk anything through. Sam is a voice-first companion you can call any hour, about anything.
A sounding board, not a coach
Sam listens, asks one good question at a time, and is comfortable with silence.
Nothing is kept
No recording, no transcript, no summary. Only that a conversation happened.
Separate from everything else
No scores here. Sam never lectures you about your readiness.
Never reports you
If you're struggling, Sam helps you reach real human support. Never your employer.
PRIVACY AS ARCHITECTURE
Not a policy. A property of the code.
Your raw heart data never leaves your phone
Not to our servers, not to anyone's.
No location tracking
Beyond one home area you set yourself, which stays on your device. Duty sensing uses your phone's motion sensor, which produces no coordinates at all.
Sensors can only count against us
The app can log driving time automatically. It can never automatically credit you a break.
You decide what's shared
Nothing reaches a fleet unless you personally turn it on, and you can turn it off again whenever you like.
FOR FLEETS
A driver who hasn't opted in shows you nothing at all.
A manager sends an invite code; the driver enters it; the account links. And then nothing happens unless that driver personally consents. A linked driver who hasn't opted in appears as a member with no data — absent, not zeros. It's checked on the server every single time, and every access is logged.
A fatigue tool drivers don't trust is a fatigue tool drivers don't wear.
WHERE WE ARE
We'd rather tell you what isn't finished.
Flightdeck's predictive readiness works today. Cadence's live engine is built and running, and we're collecting the real-world data needed to calibrate it properly — from drivers on real shifts, with reaction-time tests to check it against. Until that's done, the app is honest about what it's showing you and how sure it is.
We'd rather ship something that admits uncertainty than something that sounds certain and isn't.
Know your day before it starts.
Whether you drive for a living or run a fleet, we'd like to hear from you.
Get in touch