FanGuard

A native macOS fan control utility built with Tauri v2 (Rust backend) and Svelte 5 (frontend). Monitor temperatures and manage fan speeds through Apple's System Management Controller (SMC).

Beta — This app is in active development. Please report issues on GitHub.

Features

• Real-time temperature monitoring via SMC and IOKit sensors
• Per-fan speed control: automatic, constant RPM, or sensor-based curves
• Menu bar tray with live CPU temperature display
• Custom preset save/restore
• Emergency thermal override safety system
• Light and dark mode (follows macOS system appearance)

Requirements

• macOS 13 Ventura or later (Intel or Apple Silicon)
• Fan speed control requires running as root — the app will prompt on first use

Installation

Direct Download

Download the latest .dmg from Releases.

Note: FanGuard is not yet notarized with Apple. macOS will show a warning on first launch. To open the app:

Option A — Right-click the app → click Open → click Open in the dialog.

Option B — Run in Terminal after installing:

xattr -cr /Applications/FanGuard.app

Option C — Go to System Settings → Privacy & Security → click Open Anyway.

Homebrew

brew tap naufaldi/tap
brew install --cask fanguard

Development

# Install dependencies
pnpm install

# Run full app (frontend + Rust backend)
pnpm tauri dev

# Run with fan control (requires root)
sudo pnpm tauri dev

# Frontend unit tests
pnpm test

# Rust unit tests
cd src-tauri && cargo test

# Lint
pnpm biome:check

Prerequisites

• Node.js 18+
• pnpm 8+
• Rust 1.77.2+
• Xcode Command Line Tools

License

MIT