Working alongside researchers at
Three pillars of science
Accuracy, longevity and open research.
By the numbers
Science that stands up to review.
8Peer-reviewed publications
By Ultrahuman scientists and research partners in scientific journals.
37White papers
Validation studies, population analyses and case reports from the Ultrahuman science team.
20Active collaborations
With universities, hospitals and industry labs.
2Medical-grade algorithms
Integrated into the Ultrahuman platform.
Pulsomics
The pulse doesn’t explain itself. People do.
Pulsomics pairs the pulse your Ring records with real human context, like a blood panel, a fitness test and how rested you actually felt, to build a foundational model of the human pulse.Pulsomics pairs the pulse your Ring records with real human context to build a foundational model of the human pulse.
Total sleepvs. FDA-cleared EEG sleep test · 4 adults97%Sleep agreement
Temperature sensorbench test vs. laboratory thermometer · 3,836 readings98.7%Temp. accuracy
Heart rhythmAFib algorithm’s own validation vs. 12-lead ECG · 236 participants98.8%AFib accuracy
Ovulation detectionvs. multi-metabolite ovulation test · 22 women92.9%Ovulation accuracy
VO₂maxvs. laboratory exercise test · 101 participants89%VO₂max accuracy
Blood oxygenvs. clinical pulse oximeter · 10 participants97.4%SpO₂ accuracy
Selected research
The research behind the features you use.
Journal articles, preprints and white papers on fitness, sleep, metabolic health, longevity and women’s health.
Blood Age and wearable physiologyThe World Cup Sleep Report: what 30 match nights cost 33,513 members’ sleepSmart-ring VO2max accuracy vs. five equations and lab exercise testingWearable-derived fitness age and its lifestyle links in 442 adultsIn 211 Ring wearers, five biometrics drift from baseline around a self-reported illnessPre-bed and nighttime screen use is linked to worse sleep
Take your research
to a new level
Universities, hospitals and research groups work with us on study design, cohort access and co-authored papers.Study design, cohort access and co-authored papers, with our science team.
Still got questions?
How accurate is the Ultrahuman Ring?
Accuracy is measured one metric at a time, each against a reference instrument. Total sleep agrees 97% with an FDA-cleared home sleep test (4 adults), overnight heart rate 96% and overnight HRV 93% with an ECG chest strap (9 participants), and VO₂max 89% with a laboratory exercise test (101 participants). Every accuracy study, with the reference standard and cohort for each, is on the studies page.
What is each metric tested against?
It depends on the signal. Total sleep and sleep stages are tested against an FDA-cleared home sleep test that records brain activity (EEG); sleep onset and wake time against a consumer smartwatch. Heart rate and HRV are tested against an ECG chest strap, steps against a hand tally counter, ovulation against a multi-metabolite ovulation test, and VO₂max against a laboratory exercise test. The reference and cohort for each study are on the studies page.
Where can I read the published research?
Our peer-reviewed papers, preprints and white papers are collected on the studies page, each linking to the full publication and the cohort it was run on. New work is added as it is released.
Is my data used in research?
Taking part in Pulsomics is opt-in: your Ring data is only added to Pulsomics studies if you choose to join, and you can withdraw at any time. Our privacy policy explains how de-identified, aggregated data is used for research.
What is Pulsomics, and how do I take part?
Pulsomics is our research programme that pairs the signals your Ring records with real-world outcomes to advance the science of everyday physiology. You can join from the Ultrahuman app in about a minute, and your contribution stays de-identified.
Can my lab or clinic collaborate with Ultrahuman?
Yes. We partner with universities, hospitals and research groups on validation work and new studies. Use the Partner with us button above and our science team will follow up.