Fluor
A macOS tool that automatically switches your keyboard's Fn key behavior between Apple defaults and function keys based on the active application.
What is Fluor?
Fluor is a macOS application that automatically switches your keyboard's Fn key behavior between Apple's default media/control keys and traditional function keys (F1, F2, etc.) based on which application is currently active. It eliminates the need to manually toggle Fn key modes when switching between apps like design software, development environments, and media players. The tool runs quietly in your menu bar with visual indicators showing the current mode.
Mac users who frequently switch between applications requiring different keyboard behaviors—particularly developers, designers, and power users who need traditional function keys for some apps and Apple's media controls for others.
Fluor provides a free, open-source alternative to manual Fn key toggling or paid utilities, with a clean interface and per-application automation that just works. Unlike system settings that offer only global changes, Fluor gives you granular control without complexity.
Overview
A handy tool for macOS allowing you to switch Fn keys' mode based on active application.
Use Cases
Best For
- Automatically switching to function keys when using development IDEs like Xcode or Visual Studio Code
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