Live thermal telemetry · macOS

SEE YOUR HEAT
IN REAL TIME.

Every IOHID temperature sensor your Mac exposes, rendered as a glowing thermal control room. Each fan widget binds to a real on-die sensor — blade speed and color track measured °C. No telemetry. No network. Just live heat.

See it in action App Store status

Coming soon · Apple Silicon & Intel · macOS 13+

// What's inside

Built for people who watch their machines.

Heatsink reads every chip-level thermal signal macOS exposes, renders them with cinematic clarity, and stays out of your way the rest of the time.

Live IOHID sensors

Reads every temperature sensor your Mac exposes — typically 15+ on-die readings on Apple Silicon. Refreshes once per second.

Per-fan thermal zones

Each fan widget binds to a real die sensor — blade speed, glow color, and HOT/WARM/COOL badge driven by the zone's measured temperature.

Menu-bar resident

Animated rotating fan icon plus the hottest reading in your menu bar. Hover for full sensor context. Auto-tints to match light or dark menu bars.

Threshold alerts

Local notifications when any sensor crosses your threshold, with a configurable cooldown so you don't get spammed during a long workload.

Three themes

Furnace (default navy & red), Phosphor (black & amber CRT), Voltage (black & neon cyan). Switch live in Settings.

Privacy by design

No analytics. No telemetry. No network calls of any kind. Sensor data never leaves your Mac. Sandboxed; privacy manifest bundled.

// Live captures

Adapts to every Mac you put it on.

Whether your chassis has 0, 1, 2, or 6 fans, the dashboard reshapes itself to match the hardware. Fanless Macs get a silicon-die view; the Mac Pro tower gets all six.