macOS 27
On-device macOS Tahoe on a Mac
macOS Tahoe is implemented in the native Swift app, not as a web view in the notch. The current Xcode 26 toolchain still ships a macOS 26 SDK while the app is expected to run on Darwin 27.
Last updated 2027-07-02
Why native matters
A real Mac utility can follow Spaces, displays, and system appearance. macOS Tahoe is part of that host.
What stays in-tree
First-party macOS Tahoe lives in the app. Third-party packages cannot load unsigned code.