Since its first launch, Apple has positioned the Apple Watch as a health and fitness tracker. But it still can't do one thing naturally, that is, tracking your sleep. Now, if users want to track sleep, they must download third-party applications to achieve them.
However, that may soon change, with revelations from Apple's own people that native Apple Watch Sleep apps already exist, but Apple has not yet released them. The unpublished Sleep: was referenced in App Store's Apple alarm (Alarms) screen shot
Based on a short description in the screenshot, it supports the setting of bedtime and wake-up times in the "sleep" application, similar to the way the alarm is set in the iPhone "clock". The Sleep application, however, appears to be even further, presumably by tracking the user's sleep mode and, before setting the alarm clock, to determine the best time to gently wake the person.
For years, it has been rumored that Apple will add sleep tracking to the Apple Watch. In 2017, Apple has shown interest in the acquisition of a sleep-tracking hardware maker, Breddit. But Apple's approach to Breddit, like Beats, continued to keep the brand's relative independence and business life, and the new sleep tracker was released in December 2018.
According to the early September news that the, Apple Watch sleep app is already in preparation, it can track users' sleep quality based on information collected by many sensors on the Apple Watch. Although Apple has not announced the feature at the launch so far, the leak has undoubtedly confirmed that the feature exists, and we may soon see it in the watchOS update.