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Here is the first review I've seen of the Sense. He gives it a good review with some minor complaints. Some of his complaints are slightly strange I think, his complaints about stress tracking seemed more philosophical than technical, but it's his opinion. Good read.
I unpaired the Sense. Logged out of the Android app. Reset the Sense. Then started over, but obviously this time the new firmware was already installed. Ran through setup. No issues. The Sense isn't laggy either. But I suspect the lag issues originally were really it trying to sync or process something.
Fitbit rushed the Sense out of the door before it was a finished product. You should only buy a product for what it can do today — not what it could do in the future.
Probably true, but Fitbit is hardly the only vendor to do this and what it can't do yet is clearly identified in the literature. The bugs, however - while not entirely unexpected - are another matter.
