// to check if tracking of activities is possible on your device
TrackerManager.core.checkIfActivityEnabled()

// to check if it's possible to count steps, made by user
TrackerManager.core.checkIfStepsCountEnabled()

// to start monitoring any type of activity just use
 TrackerManager.core.startTrackingActivityType(completionHandler: @escaping(CMMotionActivity?)->Void)
// it returns CMMotionActivity, which contains a type of activity (ex. walking, running and so on

// and to stop monitoring
 TrackerManager.core.stopPedometr()
 TrackerManager.core.stopActivityManager()

// To measure the distance
TrackerManager.core.distance(completionHandler: @escaping(NSNumber?)-> Void)
// To get current pace 
TrackerManager.core.currentPace(completionHandler: @escaping(NSNumber?)-> Void)