If Aetna wanted to offer customers discounts on insurance for healthy activity, it would make far more sense to do it with something like a Fitbit. A purpose-built device for tracking activity and heartrate. The Apple watch doesn't do as good a job as the fitbit at fitness tracking, is bigger and heavier, is far more expensive, and gets far worse battery life. Not to mention the fact that the Apple Watch only works with iPhones meaning that it would be useless for the majority of US smartphone users whereas the Fitbit works with both iPhone (as much as Apple lets them) and Android.
Side Note: I switched from an Android watch to a Fitbit for activity and sleep tracking for many of the reasons outlined above.
Side Note: I switched from an Android watch to a Fitbit for activity and sleep tracking for many of the reasons outlined above.