Over 86 million people in the U.S. use some kind of fitness or calorie-tracking app, making them one of the most common, easily accessible data-crunching tools around. Their appeal is ...

Some users of popular fitness and calorie counting apps experience shame, disappointment and demotivation, potentially undermining their health and well-being, according to a new study led by ...

The promise is seductive: Snap a photo of your meal, and artificial intelligence will instantly tell you exactly how many calories you're consuming. No more tedious ...