In Apple’s big product show today in Cupertino at the new Steve Jobs Theater, Apple COO Jeff Williams unveiled Watch OS 4, which is largely focused on health and fitness. The new OS features a redesigned workout app, high intensity interval training, enhanced swim tracking smart activity coaching, GymKit to pair with machines at the gym, a revamped heart rate monitor and new music experience.
With Watch OS 4, you’ll be able to see your heart rate right on your watch face. And when you launch the app, you’ll see your resting heart rate and recovery heart rate, which tells you how quickly your heart rate drops after a workout.
When you’re not active, your Apple Watch will be able to notify you if your heart rate is elevated. The new OS can also detect arrhythmias.
With OS 4, person-to-person payments will be possible via ApplePay. which means you can send and request money right from the Messages app on your watch. The new software will be available to everyone on September 19.