Find a different scale.
I rarely write bad reviews but hopefully this is helpful to someone.  I would highly recommend not getting this scale.  While it has successfully synced in the past (so I know it CAN work with my internet, wifi, etc.) it is rarely able to sync, even when it is sitting 3' from the router.  I am constantly resetting it. taking the batteries out, putting the batteries back in, etc.  When the scale can't find the wifi network, every few minutes it tries to search for the network again...over and over...and 4 AA batteries will die in a week.  So not only does this not sync, I can't even use it as a regular scale without changing the batteries every week.  I have contacted fitbit customer service in the past, and they are able to get it to sync, but within 24 hours it can't find the wifi network again.  maybe I got a dud?  not sure.  I would just find a different alternative.
Rating: 1 stars