Health tracking apps leverage wearable technology to collect, monitor, and analyze user health data. These apps typically sync with wearable devices like fitness trackers and smartwatches, which record data such as heart rate, steps taken, and sleep patterns. By utilizing sensors, wearables provide real-time insights into a user's health and fitness levels. Health tracking apps promote user engagement through goal setting, reminders, and personalized health recommendations, ultimately aiding users in maintaining healthier lifestyles.