Once I got past learning curve, I absolutely love this version of the Fitbit. So much information that can help you on your fitness journey. The reviews you see where they complain about it not syncing are likely not correct. There are some features that it has to collect data over a period of time so you don’t see those immediately and sometimes it takes a while for the bit to recognize a workout is done before it will gather and send the data to your phone app. It’s very accurate.