|OS family||iOS-based (Unix-like)|
|Source model||Closed source|
|Initial release||24 April 2015|
|Update method||OTA Updates|
|Package manager||App Store|
|Kernel type||Hybrid (XNU)|
watchOS is the Operating System that is used by the Apple Watch. It is a stripped down version of iOS. The first version released was stylized and marketed as Watch OS 1.0, which was based on iOS 8.2.
watchOS 1.0.1 enabled users to view diverse emojis and fixes a few bugs and performance issues.