40•30•30+ app for iPhone and iPad

40•30•30+ provides the same features as the popular free version, but includes the total calories in a meal, as well as the part of the total supplied by each of three macronutrients.

Many popular diets specify that a certain percentage of your calories should come from fat, protein, and carbohydrates. While most foods are labeled with the number of grams of each, it can be tricky to convert this to percentages. With this app, you can quickly dial in the three numbers and instantly know the percentage of calories in the food you’re considering.

As always, consult with your doctor before beginning any new diet.