I bought one (Points Calculator) a few weeks ago. I've used it more for points calculation that for actual daily intake tracking. The regular, cardboard slide rule given at the meetings only go so high, but this calculator goes higher. (God forbid I need to go higher - if so, I'm in trouble). I found it useful in calculating some of the newer foods advertised lately. (Taco Bell bowls, McD's sandwiches, etc.) I don't use it for daily intake tracking becuase I really like the paper journals you get every week and I'm so used to writing everything down.
I also like to refer back to previous weeks to get meal ideas, to get points so I don't have to re-figure, etc.
$20.00 is a little steep but in the long run, I think it will pay for itself in convenience.
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