Additionally, watchOS 4 offers a long-awaited update to the Music app, adds a new dock to scroll through recently used apps and brings Apple News to the Apple Watch for the first time. That basically just means that the watch faces have their own complications and can change depending on what day it is or what time of day it is.
The Activity app is also getting a host of feature improvements.
If you use high-end gym equipment to burn your calories, two-way data exchange will keep your metrics in sync.
Also coming with watchOS 4 are kaleidoscope and Toy Story-themed watches. The Music app supports multiple playlists, too.
"Apple Watch is the ultimate device for a healthy life and is now more intelligent than ever with watchOS 4", said Jeff Williams, Apple's chief operating officer. Developers have access to watchOS 4 today, and Apple Watch users will receive it as a free update this fall.
Fitness tracking functionality is going to be extended further with watchOS4. The company is set to announce all sorts of super cool goodies at WWDC'17 and is kicking off the event with new additions to the Apple Watch.More news: Everything You Need to Know from Apple's Developers
The Workout app got some attention, too, and may be more interesting to athletes than in the past. The app will now be more focused on motivating the user. Use connected gym equipment? It will also display notifications whenever the user is close to earning an achievement or if it's possible to maintain the same level of intensity in each day of exercise routine.
Apple has also prepped an updated Workout experience in watchOS 4.
Music Machine - As a music-control device, the Apple Watch has mostly been an awkward remote control for an iPhone.
Person to person payments, which was also demonstrated in the recent iOS 11 announcement, will also make its way to watchOS 4, allowing users to transfer money to friends and family in a way that resembles the iMessage app. For example, you'll be able to set monthly challenges and check them off as you complete them. Apple Watch Nike+ starts at $369 (US). My Favorites Mix and My New Music Mix require an Apple Music® subscription. If you're using a treadmill, elliptical, or other machine that can connect to an NFC-enabled device, you can pair the Apple Watch to it so you can see information like heart rate directly on the machine.
The best-selling wearable on the market (well, estimated, since Tim Cook will never tell us exactly how many units the company has actually sold) is done with edging into the health and fitness space. Still, they bring some cool new ways to interact with our watches and add a little fun to the screen we see the most.