slow go app uses the phone 's accelerometer to monitor the user 's stride . It then automatically picks tracks with matching beats per minute . tracks are also selected depending on the runner 's musical interests . These selections become more relevant the more the app is updated .
Adidas go app uses the phone 's accelerometer to monitor the user 's stride . It then automatically plays tracks with matching beats per minute . Songs are also selected based on the runner 's musical interests . These selections become more relevant the more the app is used .