A smart app that can accurately provide you with exercise and sleep data. It can record your daily exercise steps, distance and time, as well as the calories burned each day. Take it to sleep every night, it can also monitor your sleep and give you a better sleep. reminder: Our app supports Healthkit, which allows you to view your exercise steps, exercise distance, sleep data, height and other health data through Healthkit Compatible with HAVE FIT IV on iOS 12 and above.