The only reason one might care about an accurate calorie counter is for longevity. But the vast majority of people who count calories are doing it for weight co

The only reason one might care about an accurate calorie counter is for longevity. But the vast majority of people who count calories are doing it for weight control. They don't need an accurate calorie count. All you need to know is whether your weight is trending how you want it to trend and, if not, adjust calories appropriately. I feel like a clever enough model could take pictures of food, your heart rate and your daily weigh in and suggest ways to achieve your weight goal, like "have less fries" etc.