If you've wanted to use your Pebble smartwatch as an activity tracker so far, you've had to grab a third-party app -- unlike Apple or Google, you didn't have anything built-in. Well, that won't be an issue after today. Pebble is rolling out a firmware update to the Time, Time Steel and Time Round that introduces Pebble Health, a native fitness tracking app. It continuously tracks your step counts and sleep, like the earlier apps, but you now have coaching (built with help from Stanford University) to see where you need improvement. Your results won't exist in a vacuum, either, since they plug into Apple's HealthKit, Google Fit and (soon) third-party watch apps.