Also what I'm using, but it has no free version at all, so if what people object to is having to pay, they're not gonna like it. Personally, I actually like paying for stuff I find useful, preferring that to the ad machine.
For anyone who doesn't want to follow a link, MacroFactor's killer feature is you input your daily weight and your food and it creates a smoothed estimate of your non-water gain and loss in order to be able to give you a pretty accurate estimate of total daily energy expenditure after a few weeks. That way, you not only track what you're eating, but you know exactly how much you should be eating as well, in a way that is the only way short of checking into a metabolic ward to know your own body's true energy usage. Any other system out there is just guessing based on sample averages from past studies of other people.
For anyone who doesn't want to follow a link, MacroFactor's killer feature is you input your daily weight and your food and it creates a smoothed estimate of your non-water gain and loss in order to be able to give you a pretty accurate estimate of total daily energy expenditure after a few weeks. That way, you not only track what you're eating, but you know exactly how much you should be eating as well, in a way that is the only way short of checking into a metabolic ward to know your own body's true energy usage. Any other system out there is just guessing based on sample averages from past studies of other people.