80 percent of activity tracker users stick with the devices for at least 6 months

(University of Pennsylvania School of Medicine) Use of activity trackers, such as wearable devices and smartphone apps, is on the rise, and a new study shows that 80 percent of users stuck with the device for at least six months. In the first national study of a large, diverse population, researchers found that 1.2 percent of the study population engaged with devices, and that most of the individuals who started using an activity tracker were younger and had higher-incomes than people who opted not to use the devices.