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bitshealth

Know what your body is telling you.

bitshealth makes rings, bands, watches and home sensors that measure your heart, sleep, breathing and blood sugar, then explain every number in plain words. Every metric is free in the app, forever.

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Free shipping. 60-day returns. 2-year warranty.

66bpm
Heart rate
48ms
Heart rate variability
0
Beats since you arrived
15
Metrics, all free in the app
The bits Watch heart sensor, simulated in your browser. On your wrist it samples 512 times a second.

The range

Seven devices, one app. Wear one, or build the full picture.

Shop all
Smart ring

bits Ring

Everything we measure, on one finger.

$299
Screenless band

bits Band

No screen. No distractions. Twelve days of signal.

$199
9:41 62 bpm
Smartwatch

bits Watch

The whole picture, on your wrist.

$449
118 76
Blood pressure monitor

bits Cuff

The number your doctor actually asks for.

$119
71.4
Smart scale

bits Scale

More than a number to stand on.

$149
bits
Glucose sensor

bits Patch

See what your lunch is doing.

$79 per 14-day sensor
Sleep sensor

bits Pad

Sleep tracking with nothing to wear.

$249

One app for every signal.

Your ring, cuff, scale and patch all report to the same place. Each morning the app turns last night into one readiness score and tells you, in a sentence, what moved it.

  • Every metric, all history, no subscription
  • Doctor-ready reports for blood pressure, rhythm and glucose
  • Syncs with Apple Health and Health Connect
  • Export everything as CSV or FHIR, any time
Explore the app

No paywall on your own heart

Membership is optional. Your device works fully without it.

Included with every device

$0
  • All 15 metrics your devices measure
  • Unlimited history
  • Readiness and sleep scores
  • Doctor reports and exports

bits+

$6 a month
  • Everything included, plus
  • Long-term trend reports
  • Guided sleep and training programmes
  • A monthly review in plain language
About bits+

The science

What each number measures, how our sensors get it, and where it can go wrong.

Read the science
Heart rateHow fast your heart is beating, measured continuously or on demand. Heart rate variabilityThe small beat-to-beat changes in timing that reflect how rested your nervous system is. Blood oxygenHow much of your blood's haemoglobin is carrying oxygen. ECGA 30-second recording of your heart's electrical rhythm, taken on demand. Irregular rhythm alertsPassive checks for signs of atrial fibrillation while you go about your day. Sleep stagesHow long you slept and how the night split into light, deep and REM sleep. Skin temperatureOvernight changes in skin temperature, used to spot illness and cycle phases. Respiratory rateHow many breaths you take each minute while asleep. VO2 max estimateAn estimate of your aerobic capacity, the best single predictor of long-term health that a wearable offers. Stress and recoveryA composite score built from heart rate, variability, sleep and sometimes skin conductance. GlucoseContinuous readings of the sugar in the fluid between your cells, from a sensor worn on the arm. Blood pressureThe pressure in your arteries, which only an inflating cuff measures reliably. Body compositionHow your weight breaks down into fat, muscle, water and bone. Cycle trackingPeriod and ovulation predictions improved by overnight temperature and heart rate. Fall detectionDetects a hard fall and calls for help if you do not respond.

Journal

Notes from our design and science teams.

All stories
Science, 6 min read

HRV is the number everyone quotes and nobody explains

Heart rate variability is the most useful recovery signal you have, as long as you read it against yourself.
Design, 5 min read

Why we spent two years on the inside of a ring

The outside of the bits Ring took three months. The inner surface, where the sensors meet your finger, took the rest.
Science, 7 min read

Should you wear a glucose sensor if you don't have diabetes?

Two weeks with a bits Patch can teach you a lot. Here is what the data can and cannot tell you.
Company, 4 min read

Your heart data should not be behind a paywall

Why every metric your bits device measures is free in the app, forever, and what bits+ adds on top.

Not sure where to start?

Three questions. Under a minute.

Tell us what you want to understand and what you would actually wear, and we will point you to the right device, or the right pair.

Open the device finder