I have observed active 2 watch is undercounting the calories burnt. I did a workout from sworkit for 23mins and app informed me i burned 205 kcalories. I recorded the same workout on active 2 watch using circuit training mode and the watch said i burnt 136kcal. During this my heart range was between 155 (avg) to 192.
Samsung should look into this and update the watch accordingly.
