The current pace of the user, measured in seconds per meter.
- iOS 9.0+
- macOS 10.15+
- Mac Catalyst 13.0+
- watchOS 2.0+
- Core Motion
During regular updates, this property is set to the user’s pace. The value in this property is
nil when you are performing a query for historical pedometer data or when pace information is not yet available for the user. This property is also
nil for devices that do not support the gathering of pace data.