It depends what you mean by fitness. If you’re mostly strength training then I’d say other than recording heart rate and time Apple Watch isn’t very useful (it’s like tracking a walk workout).

If you’re into cardio fitness then sure, you’ll use it a lot more. I still use it to track my strength training but that’s out of habit than anything else. I never look at the stats after the workout. Though, having this history can be very helpful if you use it with other apps to export the history to see the amount of times you’ve done an exercises monthly, quarterly or annually.

Other than fitness it really depends on the use case. Some things you may not even know you’ll use until you get it. I use the watch a lot for tracking time, setting timers, checking messages, weather and controlling media.

It’s a good extension to an iPhone which allows you to avoid having to pick up your phone for many functions I listed I do above.

What you really need is to be put on a 36-48h ECG to get the full picture not a 2 min ECG.

What is Moby ?