The Samsung Galaxy Watch 3 and Samsung Galaxy Watch Active 2 can now perform ECGs to detect signs of atrial fibrillation. However, only Galaxy Watch users with Galaxy smartphones can use the new ECG app.

Samsung's wearable products are compatible with the iPhone through the Samsung Galaxy Watch app, but Galaxy tied to Galaxy smartphones like the Samsung Galaxy Note 20 Ultra and Samsung Galaxy Z Fold 2 Only the Watch can perform ECG measurements on the wrist.

On the one hand, most Galaxy Watch users are likely Galaxy smartphone users, so ECG exclusivity may not be a major issue. However, if, like me, you are in the minority of Galaxy Watch users with iPhones, this is disappointing.

I was excited when Samsung shared the news of FDA approval at the Galaxy Watch 3 launch event in August. This groundbreaking news sounded like just what Samsung needed to catch up to Fitbit and Apple in the smartwatch market this year.

ECG readings can provide clues to potential heart problems and can save lives. It's too bad we can't try this important feature on the iPhone. Ironically, I returned my Note 20 Ultra review unit earlier this week.

Do I have a grudge against Samsung? Not at all; the Apple Watch 6 vs. Samsung Galaxy Watch 3 showdown illustrated how blatantly both companies care about their respective smartphone users. iPhone owners can set up and use the Galaxy Watch (but not vice versa), there are simply more benefits to using the Galaxy Watch and Galaxy phones together.

If you are looking for a smartwatch with an FDA-approved ECG reader and one that works with an Android phone or iPhone (not just one or the other), not the Apple Watch 6 or Samsung Galaxy Watch 3, You might want to consider Fitbit Sense, Fitbit's all-new premium product with many compelling health and fitness features, including the ability to track your stress.