I'm a former Band 2 user (for over a year after Microsoft declared it dead) and it's really embarrassing how bad Garmin's custom strength training app is, especially when the device costs more and is geared toward fitness users. Here's my review from the first workout:
-Vivoactive 3 crashed during my first real exercise and required a reboot.
-Double-tap to go to the next set is broken and a horrible design. Double-taps register maybe 1/5th of the time. The device has a perfectly good button to proceed to the next exercise. Band 2 did this with the secondary button. The vivoactive 3 needs an option to switch which action does which - I proceed to the next set far more often than I pause the workout, so if double-tap is going to stick around just make it so that I only need it rarely.
-I programmed my workouts online with Garmin Connect in pounds but the vivoactive 3 thinks I want to do them in kilos because it's set to metric. If you're counting calories from what the watch thinks is going on that will massively overestimate my activity, however...
-Calorie counting seems to underestimate wildly. I average ~600 Calories per strength workout and peak around 800 according to Band 2. Vivoactive 3 had me at a ridiculous 150. That's roughly 1.5x my resting metabolism.
-When the workout is over it should prompt to continue or simply end rather than forcing me to pause and end. How to do this was not immediately clear.
-Rep counting is a complete joke and should really just be disabled. Even Atlas doesn't do this right and it's just distracting. I can count reps myself; just make the reps input into the program be the reps I did when doing calculations.
Combine the problems above and I ended up discarding the workout from the tracker today. It makes me wonder if my device is malfunctioning somehow and was so frustrating I might just go back to memorizing my routine and doing non-programmed workouts, which defeats the main selling point of Vivoactive 3 as a Band 2 replacement.
Honestly my Band 2 still works and I would switch back if I knew it wasn't probably going to die soon with no replacement. The vivoactive 3 is also much more comfortable overall (especially when sleeping) but the only reason I held out this long was for workouts, and they're inferior to a company's afterthought product that's been dead for over a year and cost ~$100 less.
I've also posted this thread for deficiencies in the Garmin Connect app: https://forums.garmin.com/forum/into-sports/garmin-connect/feature-requests/1274923-add-more-cooldown-exercises
