It would be easier if I was buying pre-packaged food, but I cook almost everything fresh. So if I make stir-fry tonight, I have to figure out the calories for: the oil, the meat, the broccoli, the zucchini, the peppers, the garlic, the onions, etc., etc., and then divide it by whatever amount we eat as one portion. And if I have a bag of frozen peppers, for instance, it gives the calories as "one serving" of the bag, with 3.5 servings per bag. So I have to figure out THAT. Now, vegetables like that are not a huge amount of calories, so I don't have to worry about accuracy that much, but I can't just GUESS.