Keylifornia 4
Keylifornia 4 is a keyboard mapping and input customisation utility for macOS that allows users to remap keys, create keyboard shortcuts, and modify input behaviour at the system level. Based on the bundle ID (org.zinzolin.keylifornia), this appears to be a niche utility developed by an independent developer or small team. The app is designed for users who need to customise their keyboard layout or create complex input bindings beyond what the system keyboard preferences offer.
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1 suggestionWe could not find clear public information about whether Keylifornia 4 has been updated to run natively on Apple Silicon, or whether active development continues. The app will continue to run under Rosetta 2 today, but Intel-only builds will stop launching when Apple removes Rosetta 2 in macOS 28 (September 2028) — giving you roughly two years to plan. Contact the developer through their website or support channel to ask whether a native Apple Silicon build exists or is planned. If the developer is no longer active, look for actively maintained keyboard remapping alternatives such as Karabiner-Elements (free, open-source, with confirmed native Apple Silicon support) or Keyboard Maestro (paid, powerful automation-focused, natively compiled). Both run natively on M-series Macs and are still under active development.
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