GoKawiilwatchOS 27 code hints at Readiness app, deeper strength training for Apple Watch
Ahead of Apple's expected unveiling of Apple Watch Ultra 4 and Series 12, leaker pdfu found references in watchOS 27 code pointing to a new Readiness app placed near Workout on the home screen, expanded strength-training logging with sets, reps, weight and equipment data, a new optical sensor system, and possible 128GB of storage tied to a new chip. The same leaker previously surfaced details on HomePod surround sound and iOS 27 camera features.
GoKawiil's interpretation of the reporting above, not reported fact.
The Readiness app suggests Apple wants to compete more directly with wearables like Oura Ring by centralizing recovery metrics, while richer strength-training tracking could reduce reliance on third-party fitness apps. Combined with new sensors and expanded storage, these clues point to a broader hardware and software push tying Apple Watch Ultra 4 to deeper health and fitness ecosystem features.
- Code leaks suggest a new Readiness app placed next to Workout in watchOS 27.
- Strength training may gain detailed set-by-set tracking for reps, weight, and equipment.
- New optical sensors and possible 128GB storage point to hardware upgrades in Apple Watch Ultra 4.
Apple Watch Ultra 2 — If the Ultra 4 rumors have you eyeing a rugged Apple Watch, the Ultra 2 is the current flagship with a titanium case, huge always-on display, and deep workout tracking that will get watchOS updates too. It's a great pick for strength training and outdoor sessions the article's leaked features are aimed at.
See Apple Watch Ultra 2 on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: 9to5mac.com — Ryan Christoffel, 2026-09-08
Published there as: “watchOS 27 code reveals four changes for Apple Watch Ultra 4, more”
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