A calorie counter is a tool or app that helps individuals track their daily calorie intake and expenditure. By logging the foods they eat and their physical activities, users can monitor their diet and make informed choices about their nutrition. This can be particularly useful for those looking to lose weight, gain weight, or maintain a healthy lifestyle. Many calorie counters also provide additional features, such as nutritional information, meal planning, and exercise tracking. Popular examples include MyFitnessPal and Lose It!. These tools can help users set goals and stay accountable to their health and fitness objectives.