WatchOS 7

watchOS 7 is the seventh major release of watchOS for the Apple Watch series developed and distributed by Apple Inc. It was announced on June 22, 2020 at the 2020 Worldwide Developers Conference alongside iOS 14, iPadOS 14, tvOS 14, and macOS Big Sur.

New features

 * New watch faces
 * New Memoji app
 * Activity app renamed Fitness to support Apple Fitness+
 * Automatic Handwashing detection
 * Blood Oxygen app (for Apple Watch Series 6)
 * Family Setup
 * Wind Down and Sleep tracking

Product history
watchOS 7 is derived from iOS 14; both were announced on June 22 and both were released on September 16, 2020. This was the first version of watchOS to offer a public beta before wide release.

Supported models

 * Apple Watch Series 3 (limited support)
 * Apple Watch Series 4
 * Apple Watch Series 5
 * Apple Watch SE (new model)
 * Apple Watch Series 6 (new model)
 * Support ended for Apple Watch Series 1 and 2.

Release history
Developers discovered that early pre-release versions contained code for a "Kids Mode" that uses different metrics for activity tracking of young users. However, this feature was not implemented as of the developer beta. This feature was revealed to be Family Setup at Apple's special event on September 15, 2020 and released the next day. New watch faces, watch face sharing, and the blood oxygen app were also added, along with more workouts like dance and cooldown. However, some users found that the initial release of watchOS 7 caused their Apple Watch Series 3 to crash and shut down.