Beyond Step Counting
The era of the fitness tracker — a device that counts steps and reminds you to stand up — has quietly ended. Today's leading smartwatches are cleared by regulatory agencies as medical devices for specific use cases, and the pipeline of health capabilities is expanding rapidly. What began with heart rate monitoring has evolved into a constellation of sensors that would have seemed extraordinary just five years ago.
Apple Watch Series 10: The Thinnest Medical Device
Apple Watch Series 10 brought a significantly thinner profile without sacrificing the health sensor array that made its predecessors indispensable. Sleep apnea detection — cleared by the FDA — uses the watch's accelerometer to detect breathing disruptions during sleep, alerting users who may not know they have the condition. Combined with AFib detection, blood oxygen monitoring, and the ECG app, it represents a meaningful preventive health toolkit on your wrist.
Samsung's Blood Glucose Push
Samsung Galaxy Watch has been the most aggressive in pursuing non-invasive blood glucose monitoring, a feature that would be transformative for the hundreds of millions of people managing diabetes and pre-diabetes. The technology remains imperfect — current implementations track trends rather than absolute values — but Samsung's progress suggests a genuine breakthrough may arrive within the next product generation.
Garmin's Endurance Play
Garmin continues to own the serious athlete segment with running dynamics, training load analysis, and recovery recommendations that go far beyond what Apple and Samsung offer for performance sports. The Fenix and Epix lines maintain battery lives measured in weeks, not hours — a fundamental advantage for endurance athletes who cannot charge a device every night.
The Privacy Question
As health data grows richer, questions about who owns it intensify. Your heart rate is one thing; continuous blood glucose patterns, sleep architecture, and stress indicators together constitute an extraordinarily detailed health profile. Users and regulators are increasingly asking where this data goes, how long it's retained, and whether insurance companies could ever access it.