About

Meet the Tiny App That Changed How Mac Keyboards Work

Fluor isn’t backed by a big company or a huge team. It started as a passion project — a small utility built to solve a daily annoyance for Mac users everywhere. From its humble beginnings, Fluor grew thanks to the support of a passionate community that values simple, effective solutions.
On this page, discover how a single idea made a difference for thousands of people worldwide—and why we still believe in keeping software simple, smart, and open. Here is a Mac function key app story.

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Total Downloads

Fluor was downloaded and loved by thousands of Mac users worldwide.

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Free & Open Source

No ads, no upsells, no tracking—just a clean utility.

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Years of Use

Fluor has helped Mac users since its first release in 2015.

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Workflows Improved

From developers to writers, everyone found their own reason to keep Fluor running.

Our Devoted App: How Fluor Made Mac Keyboards Smarter

No big team, just one clever utility — here’s what made Fluor stand out.

Effortless Function Key Switching

Fluor automatically changed your Mac’s function key behavior based on the app you were using. No need to toggle keys manually—just set your preferences once, and Fluor quietly handled the rest, switching between standard function keys and special features.

Clean, Intuitive Interface

Designed for simplicity, Fluor lived in your menu bar and gave you instant access to your rules. No bloated menus, no complex settings. Everything was right where you needed it—one click to view, edit, or disable.

Custom Rules for Every App

Create personalized rules for any app. Want Blender to always use standard F-keys, but Finder to keep Mac features active? Fluor let you tailor keyboard behavior to your workflow, making the Mac feel truly yours.

See and Manage Running Apps

Fluor displayed all currently running apps, letting you quickly assign rules or tweak settings on the fly. Even less common applications or games could be included in your setup, giving you full control without hassle.

The Mac Function Key App Story — Fluor’s Timeline of Simplicity

Every great app starts with a small annoyance. Fluor was created to solve a simple but real problem for Mac users: switching between function keys and special features in different apps. Here’s a look at how one tiny utility quietly became a must-have for thousands, one update at a time.

2014

The Idea Was Born

Tired of switching function keys manually, a Mac developer creates a tiny utility to automate the process for each app. No more headaches with system settings!

2014

2017

First Public Release

Fluor launches on GitHub, instantly gaining attention from Mac power users who were searching for an effortless way to control F-keys per app.

2017

2018

Community Adoption

Dozens of user suggestions are implemented. Fluor becomes a must-have for coders, designers, and writers who need quick toggling between special features and standard F-keys.

2018

2019

Smart Features Added

Custom rules for each application are introduced. The interface is polished, and Fluor supports both light and dark modes to blend in perfectly with macOS.

2019

2020

Quiet Legacy

Although development slows, Fluor continues to work flawlessly on thousands of Macs, quietly doing its job in the background. The project remains open-source, beloved by the community for its simplicity and reliability.

2020

Featured & Recommended: The Mac Function Key App Story

Fluor isn’t backed by a corporation or a flashy marketing campaign—its reputation comes from the Mac community itself. Over the years, Fluor has been recommended by developers, power users, and tech journalists worldwide. The app has earned mentions in curated lists of essential macOS utilities, featured articles, independent reviews, and countless forum discussions.

Here’s where Fluor has been recognized or recommended:

…and in dozens of other independent articles, forums, and recommendations.

Fluor is trusted by Mac users around the world. The Mac function key app story behind Fluor is one of simple, open-source design that’s become a quiet favorite for anyone who wants more control over their Mac’s keyboard.

And yes — Fluor will always be free and open-source.

Want to see what others are saying? Just search “Fluor app Mac” — and you’ll find real feedback, tips, and stories from users worldwide.