Your rhythm
shows its work —
and listens back.
The privacy-safe between-visit interpretation layer for wearable data.
One weekly card and check-in that turn noisy wearable rhythms into a confidence-scored signal you can verify.
Rhythm Whisper™ · Rhythm Witness™ · Voice Check-In
SF · April 6-9 live · first cohort opening
Built for the devices people already wear. Non-clinical by design.
Care lives between
visits.
EHRs capture visits. Wearables capture proxies. Nobody links recommendation → action → physiology → experience.
Rhythmly connects what happens between them — linking recommendation to action to physiology to lived experience.
Stable
Three surfaces.
One between-visit record.
Rhythm Whisper™
The foundational signal. A weekly read of your rhythms, translated into one clear signal for the week ahead.
The signal
Rhythm Witness™
A verifiable receipt attached to every Whisper.
Proof layer
Voice Check-In
A short voice reflection that anchors the weekly signal to your lived experience.
The check-in
Rhythm Whisper™
The weekly signal.
A confidence-scored weekly read from the wearable you already use. Current state, drift vs baseline, and why it moved — in plain language. On-device by default.
Mildly drifting
Recovering
WEEK OF MAR 30
MILD DRIFT
0.5 drifting
1.0 stable
drifting
recovering
Informational only · Not medical advice
Rhythm Witness™ — The Proof Strip
The proof strip.
A verifiable receipt attached to every Whisper — before you ever see the output.
Rhythm Witness™
RW-260330-068-004
Sleep timing · HR trend · Activity load · Recovery proxies
Messages · Photos · Contacts · Location
On-device · de-identified summary only
Medium — signal flagged, not suppressed
Mar 30, 2026 · 06:14 local
Every Whisper carries a Witness strip — built into the signal before you ever see the output. What data shaped the read, what stayed private, and why the confidence is what it is.
Voice Check-In
The in-app check-in.
Your check-in stays connected to the same between-visit record as your rhythm — without storing sensitive content. Week by week, Rhythmly builds the timeline appointments rarely capture.
Built for weeks
that actually matter.
Where recovery drift shows up before pace slows. One weekly read tells you whether your body absorbed the load — or is still catching up.
When a between-session read matters more than another dashboard. Share your Whisper with your coach — same signal, no extra integration.
For people who already wear a wrist device and want the data to mean something. Not more charts — one trusted signal, once a week.
Healthcare has always been data-rich but insight-poor.
Wearables made the data richer.
They didn’t solve the insight problem.
Wearable devices projected to ship in 2026 —
Grand View Research & IDC.
The category still treats trust as an afterthought.
Wearables generate data. Nothing generates confidence.
Detection is a technological event. Prevention is a behavioral challenge — and no system structures what happens in between. The data your watch captures every night is real. The question is whether you can trust what it’s telling you. That’s the gap Rhythmly was built to close.
Intelligence you can’t inspect
is just a black box with a pulse.
Most wearables give you more data. Rhythmly gives you one trusted weekly read: what shifted this week, how confident to be, and what to try next. The hard problem is not generating another score. It’s making that score inspectable enough to act on.
The Witness strip tells you exactly which signals shaped your Whisper, what was excluded, and where compute ran. No black box.
The Whisper Index tracks drift vs your personal baseline over time — not against a population average. Earlier signal. More honest confidence.
The Voice Check-In closes the loop with a 60-second reflection that turns signal into a specific, personal suggestion — not a generic push notification.
Most wearables stop at descriptive. Rhythmly builds all three layers.
Not more charts. One trusted signal, once a week.
Models are swappable. Trust is not.
We don’t just say private.
We show you what we saw.
The Rhythm Witness™ strip is not a policy page. It is a live, verifiable record — attached to every output before it reaches you.
Zero-content by default.
“The signal is only as trustworthy as the reasoning behind it. Interpretability isn’t a feature. It’s the floor.”
- No personal content scanning — ever
- Opt-in signals only; you choose what connects
- On-device compute by default
- Cloud processes de-identified summaries only
- Pause or stop anytime, one tap
- Every insight ships with a Witness strip
- Non-clinical by architecture, not by loophole
- Designed with DPDP, EU AI Act, and FTC expectations in mind
Rhythm Witness™ — Full Strip
Verified
Mild Drift · Week 12
Sleep timing · HR trend · Activity · Recovery proxies
Messages · Photos · Contacts · Location history
On-device · de-identified summary only
Medium — signal flagged, not suppressed
RW-260330-068-004
Mar 30, 2026 · 06:14 local
The first people
this is built for.
Wrist-device users
You already use a supported wrist device. You want one calm weekly read — not another metric to manage.
Endurance coaches
You need a between-session signal you can trust. One weekly Whisper, no extra integration.
Wearable power users
You already track. You want meaning, not more charts — one trusted signal, once a week.
Invitation only. Starting with people already using a supported wrist device week to week.
Pre-launch,
not pre-product.
HumanX is where we begin the first conversations with wearable power users, endurance coaches, and wellness advisors. Live SF · April 6–9. First wrist-device cohort defined.
Also opening early conversations with coach networks, wellness advisors, and adjacent partner products where wearable change may need a trusted interpretation layer.
First cohort opening
Wrist-device cohort defined
Endurance coaches
Wearable power users
Wellness advisors
Exploring early distribution through coach networks, wearable power-user communities, and referrals.
Your rhythm has
been running.
Now it has a record.
We’re opening a limited first cohort for people already using a wrist wearable and looking for one trusted weekly signal.
Private · No new hardware · Unsubscribe anytime
You’re on the list.
You’re on the list. We’ll reach out when the next cohort opens.
#848
of 1,000
You’re in.
Thank you for your interest in the first rhythm cohort. We will reach out when the call begins.
