Either here or on her site Leigh talks a bit, something like an error rate of up to …10% maybe? or something along those lines. As in, likely more accurate than just a formula, but since it can't track some things well (like, say, being on a bicycle) and has a general margin of error… it can be off some. Also, they state not necessarily accurate for people with high bf or bmi (one or the other, or maybe both).
The problem some people have is thyroid issues as well… which I'd guess it can't track as well that you're just chemically …off …metabolically speaking.
So… pretty accurate but within a margin of error is the usual consensus.
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