For counting calories and nutrients
Lose It! is popular with calorie counters, because it calculates a daily calorie budget for you and makes calorie counting as simple as scanning a bar code or snapping a photo of your food. Unfortunately, because the app depends on food manufacturers’ data, it “underestimates all types of nutrients, including protein, sodium, carbs, fat, and fiber.”
MyFitnessPal offers many of the same features and ranks among iTunes’ top 10 health-and-fitness apps. It boasts the largest food database, and it can also track water intake. One nit: It “tends to underestimate micronutrients like calcium, iron, and vitamin C.”
Noom is “the clear winner” in calorie count accuracy, but it doesn’t track any micro- or macronutrients. Noom focuses less on tallying numbers and more on encouraging healthy habits to effect lasting change. It provides coaches to teach users about nutrition and motivate them to meet their goals.