functionflip ☆
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Description:
Function key control
Type: Cask  |  Latest Version: 2.2.4@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: System utilities
Tags: macos keyboard utility productivity remapping
Install: brew install --cask functionflip
About:
Functionflip is a macOS utility that remaps function keys to their traditional uses, such as media controls or brightness, by default. It allows users to invert the behavior of the Fn key, enabling standard F1-F12 functions without needing to press the Fn modifier key. This provides a more intuitive workflow for developers and power users who frequently use function keys in their applications.
Key Features:
  • Inverts the default behavior of the Fn key on Apple keyboards
  • Remaps function keys to standard F1-F12 functions by default
  • Provides system-level key modification without per-application configuration
  • Lightweight utility that runs in the background
Use Cases:
  • Developers needing direct access to F-keys in IDEs and terminals without holding Fn
  • Users who prefer traditional function key behavior for media controls and system settings
  • Improving workflow efficiency for keyboard-heavy applications
Alternatives:
  • Karabiner-Elements – More comprehensive keyboard remapping tool with complex rules, but heavier and more complex to configure
  • BetterTouchTool – Broader customization tool that includes key remapping but is a paid application with more features
Version History
Detected Version Rev Change Commit
Jul 2, 2024 11:09pm 2.2.4 0 VERSION_BUMP 1a54f61c
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