GRND — Screenless Wearable Fitness Band & Continuous Body Monitoring Band for Health-Intensive Personal Care

GRND wearable — premium screenless black wristband

Personal Health Intelligence

Understand
Your Body.

Scroll to exploreBand visual*

The Problem

Your Health Data
Is Everywhere.

Wearables know your heart rate. Fitness apps know your workouts. Lab reports know your biomarkers. You know when you feel unwell. Your doctor sees fragments of your history. But these pieces rarely become one understandable story.

Wearable

Workout

Sleep

Symptoms

Labs

Prescriptions

Glucose

Cycle

Nutrition

Data Is Everywhere.

Understanding Isn't.

The Concept

The Wearable Is
Just The Beginning.

More than an ordinary fitness band: GRND is an ecosystem where a screenless wearable body monitoring band, daily behavior, symptoms, and medical care records connect into one continuously learning personal health timeline.

Wearable
Workouts
Symptoms
Labs
Medications
Compatible Devices
Cycle
Lifestyle
Body
GRND
Health
Timeline

Sense

Your Body Never Stops
Producing Signals.

GRND continuously senses the physiological signals your body produces, quietly, in the background, all day and night.

Close-up of the GRND sensor module showing the optical sensor array
Sensor Module — Underside*

Heart Rate

61bpm

HRV

58ms

Resting Heart Rate

54bpm

Sleep

7h 42m

Respiratory Rate

14.2rpm

Temperature

36.4°C

Activity

612kcal

SpO₂

98%

GRND provides wellness insights and is not intended to diagnose, treat, cure, or prevent any disease. Sensor readings are not medical-grade unless explicitly stated.

Automatic Detection

Just Work Out.
GRND Keeps Up.

No taps, no setup. GRND automatically detects strength training, running, walking, and cycling, then logs the full performance picture to your timeline.

Strength Training

Detected

Running

Walking

Cycling

Added to Timeline

Strength Training

Auto-detected
Duration48 min
Heart Rate132 avg
Training Load6.4
Recovery ImpactModerate

Personal Baseline

Normal Is Personal.

GRND learns what is normal for you, specifically, instead of comparing your body to population averages. Every metric is measured against your own history.

Heart Rate Variability

48ms Today

Outside Your Usual Range

Shaded band represents your typical HRV range over the past 90 days.

HRV↓ 18%
Resting HR↑ 10%
Sleep↓ 21%

These are deviations from your personal baseline, not diagnostic values. GRND highlights change; it does not interpret cause.

Personal Health Timeline

See Your Health
As A Story.

Every workout, symptom, lab result, and medication becomes part of one continuous narrative, so change over time actually makes sense.

  1. Aug 12

    Workout Detected

    Strength training, 48 minutes, moderate training load.

  2. Aug 14

    Poor Sleep

    Sleep duration 21% below your usual range.

  3. Aug 15

    Feeling Unwell

    Fatigue logged. HRV and resting heart rate outside usual range.

  4. Aug 16

    Medication Added

    New prescription logged to health record.

  5. Aug 20

    Blood Test Uploaded

    Ferritin, Vitamin D, and lipid panel results added.

  6. Aug 28

    Recovery Returns to Baseline

    HRV and resting heart rate back within your usual range.

In The Moment

“I'm Feeling
Unwell.”

One tap starts tracking the physiological context around how you feel, so the moment becomes part of your data, not just a memory.

How are you feeling?

Early Risk Detection

Your Body Warns You
Before You Feel It.

GRND cross-references heart rate variability, skin temperature, respiratory rate, and resting heart rate to detect physiological deviations up to 72 hours before symptoms surface — giving you time to act, not just react.

72 hAvg. advance warning
4Vital signs cross-referenced
24 / 7Continuous monitoring
High Deviation

Heart Rate Variability

41 ms

↓ 34%

Baseline: 62 ms

Sharp multi-day drop — often precedes immune stress or illness onset.

Elevated

Skin Temperature

37.1 °C

↑ 0.7°C

Baseline: 36.4 °C

Persistent elevation overnight — early signal of inflammatory response.

Elevated

Respiratory Rate

17.8 rpm

↑ 25%

Baseline: 14.2 rpm

Increased resting breathing rate — correlates with autonomic strain.

High Deviation

Resting Heart Rate

63 bpm

↑ 17%

Baseline: 54 bpm

Elevated resting HR across three consecutive nights before symptoms appear.

Early Warning Timeline

GRND detects deviations from your personal physiological baseline. Early risk signals are not diagnoses. Always consult a qualified healthcare professional for medical concerns.

Pattern Recognition

GRND Learns
Your Patterns.

Similar physiological changes appeared around previous events you recorded. This is personal pattern recognition, not medical diagnosis.

Event 01Mar 4
HRV-19%
Resting HR+9%
Sleep-17%
Event 02May 22
HRV-21%
Resting HR+11%
Sleep-24%
Event 03Jul 9
HRV-16%
Resting HR+8%
Sleep-15%
Event 04Aug 15
HRV-22%
Resting HR+12%
Sleep-19%

Similar changes appeared around previous events you recorded.

Records

Your Lab Results
Belong In The Story Too.

Import lab work, prescriptions, and doctor visits directly into your timeline. Every record is user-provided or imported, clearly sourced and dated.

Vitamin D

In Range

32ng/mL

Aug 20Quest Diagnostics

Reference range: 30–100 ng/mL

Ferritin

Low

18ng/mL

Aug 20Quest Diagnostics

Reference range: 20–250 ng/mL

B12

In Range

540pg/mL

Aug 20Quest Diagnostics

Reference range: 200–900 pg/mL

HbA1c

In Range

5.2%

Jun 3LabCorp

Reference range: <5.7%

Glucose

In Range

96mg/dL

Jun 3LabCorp

Reference range: 70–99 mg/dL

LDL Cholesterol

High

128mg/dL

Jun 3LabCorp

Reference range: <100 mg/dL

PrescriptionsMedication HistoryDoctor VisitsImported / User-Provided Records

Ecosystem

We Don't Need To Build
Every Sensor.

GRND connects to compatible third-party health devices, becoming the intelligence layer that ties your ecosystem together rather than replacing it.

Compatible

GRND Wearable

Continuous physiological signal, always on.

Compatible

Glucose Monitor

Connects continuous or periodic glucose readings.

Compatible

Blood Pressure Device

Syncs systolic and diastolic readings automatically.

Compatible

Smart Scale

Weight, body composition, and trend over time.

Women's Health

Your Body Has Context.

Explore the relationship between your cycle, symptoms, and personal physiological trends. GRND surfaces correlations across your data; it does not directly measure hormones.

Current Cycle Phase Overview

MenstrualFollicularOvulation● Luteal
CycleSleepRecoveryEnergySymptomsPerformanceRelevant Lab Results

During your luteal phase, your recovery has typically run 8–12% below your baseline, and energy scores trend lower in the two days before your period starts.

Health Intelligence

Ask Your Health Data.

A data-grounded personal health assistant. Every answer references your actual physiological history, never a generic response.

Why is my recovery lower this week?

Your HRV has run 16% below your 90-day baseline since Tuesday, alongside two nights of reduced sleep and a strength session with elevated training load.

HRVSleepTraining Load

What happened around the last time I felt unwell?

On Aug 15, your resting heart rate rose 10% and HRV dropped 18% two days before you logged fatigue. A similar pattern appeared before your March entry.

RHRHRVTimelineSymptoms

Doctor Summary

When You See A Doctor,
Bring The Context.

GRND functions as a personal body monitoring band that translates daily vitals into clinical context for medical care. Generate an exportable summary of physiological trends, symptoms, and labs so physician consultations start with objective data.

Health Summary

Last 30 Days

Ready to share

HRV Trend

16% below 90-day baseline since Aug 12

Resting Heart Rate

Elevated 10%, returning to baseline Aug 28

Sleep

3 nights below usual duration this month

Medication

New prescription added Aug 16

Recent Labs

Ferritin low, LDL elevated (Aug 20)

Symptom Log

Fatigue reported Aug 15, resolved Aug 22

Questions to discuss with your healthcare professional

  • Could my lower ferritin be contributing to the fatigue I logged in August?
  • Should my strength training load change given the recovery pattern this month?
  • Is there a connection between my elevated LDL and recent sleep changes?

Response

Know When To Push.
Know When To Pause.

GRND turns your data into a clear, responsible recommendation, never a diagnosis, always grounded in your own patterns.

TrainRecoverMonitorLogSeek Professional Help

Today's Guidance

Your recovery is below your usual range today. Consider a lighter session and continue monitoring how you feel.

Product

One Small Device.
A Much Bigger System.

Screenless. Minimal. Premium. Built as a body monitoring band and screenless fitness wearable with a compact sensor module on a soft-touch fabric strap, designed to disappear onto your wrist for 24/7 physiological telemetry.

GRND screenless health wearable — front view showing minimal design

Front*

GRND wearable — side profile showing slim form factor

Side*

GRND wearable — sensor underside with multi-wavelength PPG sensors

Underside*

GRND screenless wearable worn on the wrist — on-body fit

On-Wrist*

How It Works

From Signal To Understanding.

Sense

Continuous physiological signal from the wearable.

Capture

Workouts, symptoms, labs, and devices sync automatically.

Learn

GRND builds a personal baseline unique to your body.

Understand

Deviations and patterns surface as a readable story.

Respond

Clear, responsible guidance grounded in your data.

Share

Bring real context to your next healthcare visit.

Join The Waitlist

Your Body Is
Constantly Talking.

GRND helps you understand what it's saying.

Explore the Ecosystem