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Quick Verdict
Withings announced StethO Sense at IFA 2026, and it fixes the strangest thing about BeamO. The $249.95 handheld has been able to record heart and lung sounds since its US launch, but it could not tell you anything about them. From October 1, 2026 it can. Heart recordings go to eMurmur, which returns one of three outcomes, no murmur, innocent murmur, or abnormal murmur, along with a heart rate and a confidence score. Lung recordings go to StethoMe, which returns a Breathing Index on a 0 to 100 scale built from breathing sounds, quality, rate, respiratory rhythm and heart rate. The device walks you through four chest positions for the heart and up to eight for the lungs, and results come back within seconds. This is the first time a mainstream consumer device has offered automated murmur classification at home.
Now the catch, in three parts. First, StethO Sense is exclusive to Withings+, which Withings prices at $9.95 a month or $99.50 a year. You get one free month and then the feature is behind a subscription, which means the analysis is rented, not owned. Second, only half of it is FDA cleared: the eMurmur heart analysis is cleared in the US for adults and children, while the StethoMe Breathing Index ships as a general wellness feature with no FDA clearance. Third, and this is the part nobody will put on the box, the published evidence behind the murmur AI comes from clinicians recording patients, largely children, in hospitals. Withings' own release states plainly that "AI results are diagnosis-assisting only" and that "final clinical assessment must be performed by a qualified healthcare provider."
What BeamO Already Did, and What Changes
BeamO went on sale in the US on November 13, 2025 at $249.95 after FDA clearance covering electrocardiogram, digital stethoscope and contactless temperature measurement. It takes four measurements in under a minute: a single lead ECG through two stainless steel electrodes, heart sounds through the digital stethoscope, lung sounds through a piezoelectric disc, and body temperature by infrared analysis of the temporal artery. Two limits were already there and still are. The ECG is restricted to adults aged 22 and up, and interpreting an ECG has always required the Cardio Check-Up service, where a cardiologist reviews the trace within 24 hours.
So the sound recordings were the orphan feature. You could capture them and share them, but the device gave you no read on them. StethO Sense closes that loop with software rather than hardware, which is why existing owners get it too rather than being asked to rebuy.
What You Actually Get Back
The two halves of the feature are not equivalent, and the difference matters more than the marketing suggests.
| Item | Heart analysis | Lung analysis |
|---|---|---|
| AI partner | eMurmur | StethoMe |
| Output | No murmur, innocent murmur, or abnormal murmur, plus heart rate and a confidence score | Breathing Index, a 0 to 100 score |
| US regulatory status | FDA cleared, adults and children | General wellness feature, no FDA clearance |
| Performance claimed by Withings | About 90% sensitivity and specificity for pathologic murmur detection | None stated |
| Recording positions | 4 standard positions | 8 positions from age 12, 6 positions under 12 |
| Time to result | Within seconds | Within seconds |
| Requires Withings+ | Yes | Yes |
The row to read twice is the regulatory one. A Breathing Index that carries no FDA clearance is not a lung test. It is a number you can watch move, which is genuinely useful if you already know you have something to watch and close to meaningless as a screening tool for someone who does not.
The Evidence Behind the Murmur Number
Withings quotes "approximately 90% sensitivity and specificity for pathologic murmur detection" from blinded prospective studies. We went and read eMurmur's own publications list rather than take the round number at face value, and the underlying picture is more interesting than the headline.
The largest study, published in Pediatric Cardiology in December 2018, ran 3,180 heart sound recordings from 603 outpatient visits and reported sensitivity of 93% (CI 90 to 95%) and specificity of 81% (CI 75 to 85%), with accuracy of 88% (CI 85 to 91%). A prospective trial at the Children's Hospital of Eastern Ontario on 93 patients, measured against echocardiography, reported 84.4% sensitivity and 85.9% specificity. An earlier pilot at the same hospital on 106 children reported 87% sensitivity and 100% specificity. So "about 90% and 90%" is a fair summary of a range, not a single measured result, and the sensitivity and specificity numbers move in opposite directions between studies.
The more important pattern is who was in those studies. Pediatric cardiology outpatients. Children's hospitals. Recordings taken in clinical settings. That is not a criticism of the algorithm, which performed at levels the 2018 paper described as similar to specialist auscultation. It is a caution about transfer. Placing a stethoscope correctly on a chest is a learned skill, and every one of those datasets was collected by people who had learned it. Withings is now asking you to do it in your living room from an app prompt. Nothing in the published record tells you how the AI performs on recordings made that way, and that gap is the single biggest open question about this launch.
What FDA Cleared Means Here
eMurmur's clearance history is worth knowing because it shapes what the company is allowed to claim. The original eMurmur ID clearance, K181988, went to Csd Labs GmbH with a decision date of April 17, 2019. The FDA record describes a decision support device for the healthcare provider in evaluating patient heart sounds, identifying S1, S2 and murmurs as physiological or pathological, and states that the device "is not intended as a sole means of diagnosis" and needs physician over-read alongside other patient data to be clinically meaningful.
In January 2026 eMurmur announced a further FDA clearance making its Heart AI hardware agnostic, so it can run across different digital stethoscope models and integrate into third party software by API. That clearance is what makes a Withings integration possible at all, and eMurmur's own site describes the platform as FDA cleared and CE marked. Its list of intended settings includes bedside auscultation, remote stethoscope exams during virtual visits, pharmacy screenings and home health applications.
Read those two facts together and the shape of the product becomes clear. The AI is cleared as a tool that helps a clinician decide, and it is now allowed to run inside consumer software. That is not the same thing as being cleared to tell you, alone in your kitchen, whether your heart is fine. Withings has been honest about the line. Whether every buyer reads the line is a different question.
What It Costs, and What Happens After the Free Month
BeamO stays at $249.95. StethO Sense is available only to Withings+ members at $9.95 a month or $99.50 a year. Anyone who bought a BeamO before October 1, 2026 gets a complimentary month of Withings+, and anyone buying from October 1 gets a one month trial included.
This is the same pattern showing up across home health hardware, and it is worth naming. Withings+ was already the gate on Cardio Check-Up, the cardiologist ECG review. It is now the gate on murmur analysis too. The device you own keeps recording sounds forever; the ability to understand them lapses when you stop paying. Our look at whether smart scales are accurate in 2026 found the same creep on the bathroom scale, where the hardware price stopped being the whole price. At $99.50 a year, a family using this a few times a winter should do the arithmetic honestly: that is more per year than most people spend on urgent care copays for the visits this is meant to inform.
Who This Is Actually For
Three groups have a real case for it. Parents of a child already known to have a murmur under watchful waiting, because the published evidence base is strongest in exactly that population and because a recording plus a classification is a better thing to bring to a pediatrician than a worried description. People managing a diagnosed respiratory condition, where a Breathing Index trend across weeks means something even without clearance behind it. And households already inside the Withings ecosystem paying for Withings+ anyway, for whom the marginal cost is zero.
Everyone else should be careful about the failure mode that matters. A screening tool with roughly 85% specificity, used repeatedly on healthy people, will eventually flag something that is not there. The 2018 study's own specificity range, 75% to 85%, means somewhere between one and two of every ten murmur free recordings could come back abnormal. False reassurance is the mirror risk: an innocent classification on a badly placed recording is not evidence that anything was ruled out. This device is a way to bring better information to a clinician, not a way to avoid needing one.
Where Vora Fits
Here is the honest plumbing answer, and it is not the one a marketing page would give you.
A murmur classification and a Breathing Index are not data types that Apple Health or Health Connect carry. There is no HealthKit field for "innocent murmur" and no Health Connect record for a proprietary 0 to 100 breathing score. So no matter how good Withings' sync is, those two results stay inside the Withings app. We tried to confirm BeamO's exact sync behaviour against Withings' own support documentation this run and the pages would not serve to us, so we are not going to state what BeamO writes where. What we can say from our own earlier reporting is that Withings has been among the more reliable brands on both Apple Health and Android's Health Connect for the metrics those platforms do define, such as weight and body composition.
Vora reads from Apple Health and Health Connect rather than talking to devices directly, so the practical answer is that BeamO's ordinary numbers, temperature and heart rate, can join your sleep and training picture, while the murmur and breathing results are a separate errand you take to a doctor. That split is fine. Not every health number needs to live in the same place, and the ones that need a clinician's eyes are exactly the ones that should not be quietly averaged into a daily score. Our integrations page lists what we read, and which wearable metrics actually sync to Apple Health covers why this question decides whether a device is useful to you.
If you are looking at BeamO because you want more clinical grade measurement at home, two neighbours are worth reading first. Blood pressure watches in 2026 covers the category where the accuracy claims are loudest and the validation is thinnest, and the Huawei Watch D3 is the current example of a real inflatable cuff on a wrist. The through line across all three is the same: check what is cleared, check who validated it, and check what it costs after the free month.