Da fit only tracks calories expended while recording exercise so I have to manually calculate my caloric need throughout the day. The sleep tracker is essentially useless. It says 8 hours of great sleep whether I toss and turn for four hours or actually get a good night's sleep. Also, the bedtime and wake times are consistently wrong. The heart rate monitor seems to be low while exercising. And the english descriptions need improvement. All that said, it's decent for a free app.

The watch is nice looking, but the applications need some work. For instance you have to manually have it measure everything except steps, it won't automatically track your HR. Also, there is a stopwatch but no timer. And the alarms are hard to set on the app and sync with the watch. It also seems to be inaccurate a lot with its readings.

Quirks that still need to be worked out. 1. You should be able to add/remove activity cards from the home screen for more personal customization. Such as, tracking menstrual cycles, in particular since I'm a man and don't have those. Therefore, I don't need the card and it would be nice to be able to delete that from the home screen. Also, an exit/cancel or "X" button on exercise courses. I had to foce close the app to get out of a training course. You should be able to back out at any time