The Ultrahuman Ring Air has become the first smart ring to offer atrial fibrillation (AFib) detection. This feature is part of Ultrahuman’s new PowerPlugs app store and requires a subscription. The ring monitors heart rhythm and alerts users to potential AFib, a feature the CEO calls ‘lifesaving technology.’ While the feature is available in limited markets, it’s expected to launch in the US and India soon. Ultrahuman also opened its data streams to developers, paving the way for more apps and features in its PowerPlugs store, some of which will be paid.