This is a suggestion for exercise calorie counters, so that you make sure your eating enough for what you energy you put out, because that's also important to keep in mind....many people under or over estimate how many calories they burn throughout the day.....A polar heart rate monitor is a good investment...you can use it to not only watch your heart rate when you exercise, but polar also adds calorie counters for how much calories you burn through exercise. Then you can use the online trackers like the ones mentioned to rate calories eaten and then see if they it matches your daily needs! Make sure you calculate your daily caloric needs through calculating your BMR too!