watchOS

watchOS
Logo
watchOS 10 running on an Apple Watch SE
watchOS 10 running on an Apple Watch SE
DeveloperApple, Inc.
Initial releasewatchOS 1
(24 April 2015)
Latest releasewatchOS 11.0.1 (22R361)
(3 October 2024)
Latest previewwatchOS 11.1 (22R5559b)
(1 October 2024)
Supported platformsARM32 (prior to watchOS 9)
ARM64 (as of watchOS 5)
Kernel typeHybrid (XNU)
User interfaceCocoa Touch
LicenseProprietary (with open source components)

watchOS is a series of mobile operating systems developed by Apple for their Apple Watch platform. It is based on codebase of iOS.

watchOS 1 through watchOS 8 was 32- and 64-bit compatible. However, watchOS 9 dropped support for 32-bit software. watchOS 5 was the first version of watchOS to bring 64-bit support.

Timeline[edit | edit source]

Name Darwin version Codename Release date Notes
watchOS 1 14 SkiHill (watchOS 1.0)
Bucket (watchOS 1.0.1)
April 2015 First version of watchOS
watchOS 2 15 Bondi (watchOS 2.0)
Atlantic (watchOS 2.0.1)
Bahar (watchOS 2.1)
Coral (watchOS 2.2)
Fish (watchOS 2.2.1)
Goldfish (watchOS 2.2.2)
September 2015
watchOS 3 16 Daytona (watchOS 3.0)
Blowfish (watchOS 3.1)
Catfish (watchOS 3.1.1)
Dogfish (watchOS 3.1.3)
Electric (watchOS 3.2)
Firefish (watchOS 3.2.2)
Ghostfish (watchOS 3.2.3)
September 2016
watchOS 4 17 Fortune (watchOS 4.0 - 4.0.1)
Beluga (watchOS 4.1)
Catamaran (watchOS 4.2)
Dolphin (watchOS 4.2.2 - 4.2.3)
Emperor (watchOS 4.3)
Ferry (watchOS 4.3.1 - 4.3.2)
September 2017
watchOS 5 18 Glory (watchOS 5.0 - 5.3.9) September 2018 First version of watchOS to bring 64-bit support
watchOS 6 19 Grace (watchOS 6.0 - 6.3) September 2019
watchOS 7 20 Hunter (watchOS 7.0 - 7.6.2) September 2020
watchOS 8 21 Jupiter (watchOS 8.0 - 8.8.1) September 2021 Final version of watchOS with 32-bit support
watchOS 9 22 Kincaid (watchOS 9.0 - 9.6.3) September 2022
watchOS 10 23 Lighthouse (watchOS 10.0 - 10.6.1) September 2023
watchOS 11 24 Moonstone (watchOS 11.0 - 11.1) September 2024