WatchOS 5

WatchOS 5 is the fifth major release of watchOS for the Apple Watch that was designed, developed and distributed by Apple. It was announced at WWDC 2018 alongside iOS 12, tvOS 12 and macOS Mojave, preceding a developer beta and released on September 20th to the general public of the same year. WatchOS 5 was the predecessor to watchOS 6 and the successor to watchOS 4.