Users of Ultrahuman’s smart rings can now run a 60-second heart rhythm check whenever symptoms appear. The new Heart Scan feature, launched today, pairs the Ring Air and Ring Pro with technology from FibriCheck. It delivers a clinical-grade report ready to share with a physician.

Short. Simple. Immediate. That describes the experience. Open the Ultrahuman app. Stay still. The ring’s optical sensors capture pulse data. FibriCheck’s algorithm processes it. Results appear moments later.

But the real value lies in timing. Atrial fibrillation often strikes without warning and vanishes before a doctor visit. Previous monitoring in wearables focused on overnight passive scans. Heart Scan adds the missing piece: symptom-triggered daytime assessment. Users gain snapshots exactly when they feel something off.

Ultrahuman first introduced AFib Detection as a PowerPlug subscription in 2024. That feature sampled heart rhythm during sleep using the same PPG sensors. The new capability folds directly into existing subscriptions at no extra cost. Wareable first reported the launch details this morning (https://www.wareable.com/wearable-tech/ultrahuman-ring-pro-air-free-afib-check-fibricheck).

Engadget noted the partnership enables spot checks “whenever something feels off” (https://www.engadget.com/2278463/ultrahuman-on-demand-afib-heart-rhythm-scan/). Daniel Cooper’s piece highlighted how the PDF output includes raw pulse trace, tachogram and Lorenz plot of beat intervals. Physicians see actual data. Not just a patient’s recollection hours or days later.

The process demands stillness for one minute. PPG sensors in the ring shine light through the skin and measure blood volume changes. FibriCheck’s CE-marked algorithm then classifies the rhythm. Possible outputs include regular, possibly irregular, possible atrial fibrillation, low signal quality or inconclusive.

Accuracy matters here. Ultrahuman’s own science page details validation. In a multicentre study of 236 participants, the algorithm achieved 98.8% overall accuracy against 12-lead ECG read by cardiologists. It caught 99% of AFib readings and correctly cleared 98.7% of non-AFib cases. A separate unsupervised home study showed 98.3% sensitivity and 99.9% specificity (https://www.ultrahuman.com/science/accuracy/longevity-afib/).

These figures build confidence. Yet experts caution that consumer devices supplement, never replace, clinical diagnosis. AFib affects millions. Many cases remain undetected until complications arise. A ring that sits on the finger 24/7 offers constant opportunity for checks. No bulky watch. No chest strap.

Availability covers 37 markets today. The UK, EU countries, UAE, Saudi Arabia, Singapore and Australia lead the list. U.S. users wait for regulatory clearance. App updates enable it: version 4.3.0 on iOS, 3.2.0.0 on Android. Passive overnight monitoring continues via the paid PowerPlug for those who subscribe.

Competition in smart rings grows sharper. Oura focuses on recovery metrics. Circular’s latest models added ECG in some versions and NFC payments. Google’s Fitbit Air entered the screenless category earlier this year. Each pursues different strengths. Ultrahuman bets on accessible cardiac insights without added hardware cost.

Recent coverage shows momentum. A study published this year found one smart ring outperformed Apple Watch in automated AFib detection, with far fewer unclassified readings. Such comparisons underscore the category’s progress. Patient Care Online summarized those findings today (https://www.patientcareonline.com/view/skylabs-smart-ring-outperforms-apple-watch-for-atrial-fibrillation-detection).

Heart Scan doesn’t diagnose. It informs. The PDF report travels easily to a cardiologist. That bridge between consumer data and clinical care could shift how irregular rhythms get documented. Episodes that last minutes instead of hours now stand a better chance of capture.

Ultrahuman positioned the feature around real life. After a hard run. Too much coffee. During stress. Moments when curiosity about heart rhythm spikes. The company tweeted about it weeks ago in advance of World Heart Day. The timing aligns with growing awareness of silent cardiovascular risks.

Longer term, integration with other ring metrics seems likely. Sleep data, HRV trends, activity levels already live in the app. Adding on-demand rhythm checks creates richer context. A high stress day followed by irregular scan carries different weight than one with stable readings.

Regulatory paths differ by region. CE marking covers Europe. FDA clearance lags for the U.S. market. Similar hurdles slowed other wearables. Yet consumer appetite for heart health tools continues to expand. Smart rings, once niche, now sit at the center of this shift.

The feature arrives at an interesting moment for the industry. Passive monitoring established baseline capability. On-demand tools add agency. Users don’t just receive alerts. They initiate checks on their schedule. That flips the script from reactive to proactive in everyday heart tracking.

Results still require interpretation. False positives happen. Signal quality varies with movement, skin tone, fit. The app flags poor readings. Users learn quickly what produces clean data. Consistency improves over time.

So the launch represents evolution more than breakthrough. It refines an existing subscription. It pairs two established technologies. PPG from the ring. Proven algorithm from FibriCheck. The combination yields practical benefit for ring owners concerned about rhythm issues.

Industry watchers expect more such integrations. Third-party health algorithms could expand PowerPlugs further. Ultrahuman opened APIs for developers. The platform strategy mirrors software ecosystems in other devices. Hardware stays constant. Capabilities grow through updates.

For now, Heart Scan gives current users a new reason to check their ring data. One minute. Real-time insight. Shareable report. The barriers drop. Whether it leads to earlier medical intervention remains an open question. Data will tell over coming months and years.

But the direction feels clear. Wearables move beyond step counts and sleep scores. Heart rhythm monitoring, once hospital territory, enters daily life through a device many already wear. Ultrahuman’s latest move accelerates that transition.