During the 2018 Worldwide Developers Conference keynote today, Apple revealed watchOS 5, the latest version of its Apple Watch operating system. It began the discussion by touting the Apple Watch as the leading smart watch in customer satisfaction, noting that its sales grew 60 percent in 2017, and that the device has actually saved lives. The company previously noted that the Apple Watch was the best-selling watch in the world.

watchOS 5 is expected to help Apple compete even more aggressively with Fitbit health trackers, which have remained competitive with the Apple Watch thanks to their lower price points. The new OS includes Competitions within the Activity app that let you challenge friends with up to seven-day rivalries. A new badge is earned for winning a Competition.

Workouts has added new workout types for Yoga and Hiking, the latter with elevation tracking. Rolling Mile Pace is being added for outdoor runs, plus a custom pace alert and Cadence. Automatic workout tracking is being added, enabling you to receive retroactive credit for tracked activity you forgot to manually tag as a workout. watchOS 5 will also include automatic end alerts to let you stop tracking when no activity is detected.

Walkie-Talkie is being added to let you send quick voice memos from person to person. It works over Wi-Fi or cellular connections, and you can send quick real-time audio from watch to watch.

The Siri watchface will now incorporate additional types of information, including sports scores, Siri Shortcuts, and third-party apps — including relevant content and shortcuts. You’ll also be able to…

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