Act.Tracker is a free app designed to help you track your daily activity and measure your progress as you work towards achieving your fitness goals. To use this app, you will need the NB Activity Tracker Smart Band.nSometimes the hardest part of a fitness routine is staying motivated. Now you can see just how far you have come! Set your daily goals in the app, then track your steps, distance and estimated calorie burn all day. Need more incentive?nThe NB Activity Tracker also records your total exercise time, total active time and sleep time - so your entire day is covered!