Siri AI
watchOS 27 brings a more capable conversational Siri, a dedicated Siri app, and deeper context-aware assistance when paired with supported Apple Intelligence-enabled iPhone models.
Major OS release · watchOS
watchOS 27
Software history
Defining features
Feature summaries are anchored to the cited Apple first-party source.
Workout Buddy
Workout Buddy adds new motivational insights and can work without the paired iPhone nearby when the watch has a Wi-Fi or cellular connection.
Cycle Tracking
Cycle Tracking can provide cycle-deviation notifications suggestive of perimenopause for eligible users age 40 and over.
Smart Stack tap gesture
A new single-handed tap gesture lets users select Smart Stack widgets by tapping the index finger and thumb together, with new context-aware widget suggestions.
Dynamic app grid
The app grid becomes dynamic, highlighting frequently and recently used apps for faster access.
Consolidated Find My
Find My is consolidated into one watch app with People, Devices, and Items organized around a map-centric interface.
Fitness and workout accuracy
Workout and Fitness improve treadmill distance calculation and post-workout route accuracy.
Battery and interface refinements
watchOS 27 adds proactive battery-extension suggestions, offline Shazam recognition, and Liquid Glass readability and contrast refinements.
watchOS
Device support
Archive-product links show the canonical products represented by this project. The full device-name list preserves the broader structured support evidence, including hardware refreshes that do not have their own archive node.
Supported archive products8 mapped products
Full device coverage23 device names
- Apple Watch SE 3 (GPS + Cellular, 40mm)
- Apple Watch SE 3 (GPS + Cellular, 44mm)
- Apple Watch SE 3 (GPS, 40mm)
- Apple Watch SE 3 (GPS, 44mm)
- Apple Watch Series 10 (GPS + Cellular, 42mm)
- Apple Watch Series 10 (GPS + Cellular, 46mm)
- Apple Watch Series 10 (GPS, 42mm)
- Apple Watch Series 10 (GPS, 46mm)
- Apple Watch Series 11 (GPS + Cellular, 42mm)
- Apple Watch Series 11 (GPS + Cellular, 46mm)
- Apple Watch Series 11 (GPS, 42mm)
- Apple Watch Series 11 (GPS, 46mm)
- Apple Watch Series 12 (GPS + Cellular, 42mm)
- Apple Watch Series 12 (GPS + Cellular, 46mm)
- Apple Watch Series 12 (GPS, 42mm)
- Apple Watch Series 12 (GPS, 46mm)
- Apple Watch Series 9 (GPS + Cellular, 41mm)
- Apple Watch Series 9 (GPS + Cellular, 45mm)
- Apple Watch Series 9 (GPS, 41mm)
- Apple Watch Series 9 (GPS, 45mm)
- Apple Watch Ultra 2
- Apple Watch Ultra 3
- Apple Watch Ultra 4
Support dropped at this major
Archive products
Device names in support data
- Apple Watch SE (2nd generation, GPS + Cellular, 40mm)
- Apple Watch SE (2nd generation, GPS + Cellular, 44mm)
- Apple Watch SE (2nd generation, GPS, 40mm)
- Apple Watch SE (2nd generation, GPS, 44mm)
- Apple Watch Series 6 (GPS + Cellular, 40mm)
- Apple Watch Series 6 (GPS + Cellular, 44mm)
- Apple Watch Series 6 (GPS, 40mm)
- Apple Watch Series 6 (GPS, 44mm)
- Apple Watch Series 7 (GPS + Cellular, 41mm)
- Apple Watch Series 7 (GPS + Cellular, 45mm)
- Apple Watch Series 7 (GPS, 41mm)
- Apple Watch Series 7 (GPS, 45mm)
- Apple Watch Series 8 (GPS + Cellular, 41mm)
- Apple Watch Series 8 (GPS + Cellular, 45mm)
- Apple Watch Series 8 (GPS, 41mm)
- Apple Watch Series 8 (GPS, 45mm)
- Apple Watch Ultra
Public releases
Public release history
Every canonical public release assigned to this major version, including the initial release and later point updates.
2026
- 27.0Initial major release