Android Wear has built-in step counting but Runkeeper takes it a stage further offering much more information and run tracking.

It provides at-a-glance information on your run pace, distance and calorie burning, plugging into the existing service and app, which starts free with an option to upgrade to a monthly "elite" service for $9.99 (£5.85 in the UK) a month.

Runtastic is a similar app that does the same job and which one you pick up is probably determined by which one you already use on your phone.