A free app for Android, by NUBAND.

NUBAND X is the activity tracker for people who are interested in keeping a track of their daily activities, workouts, and sleep. The app can be used to set goals for these parameters, so that the individual can stay on track and motivated to achieve their goals. The app also allows the user to check the progress of their goals, and to view graphs that show their progress over time.

The app can be used to record the date, time, activity, and many other data points. These can be viewed in different ways, such as in a timeline, graph, or in a list.

It can be used to record your heart rate during your workouts, and to track the amount of calories you burn.

It can also be used to record the number of steps you walk each day, and to record the number of calories you burn by walking.