The Ultimate Mac Cleanup Tool, Completely Free
Headroom shows what your Mac is doing, down to the process: CPU, GPU, memory, disk, network, battery and heat. Optimize clears what rebuilds itself — simulator runtimes, build folders, caches — and says what comes back before anything goes.
Everything at a glance
Seven readings on one page, each a figure, a meter and five minutes of trace. Past a threshold a reading turns amber or red, and the title counts them.
Down to the process
CPU, GPU, memory, disk, network and battery each list every process by what it’s using. Quit sits behind a confirm, and What’s This? looks up a name that means nothing.
Where the space went
A map of the whole disk that adds up to what’s used, including what macOS won’t let anyone read. Double-click to go in; reveal a folder, or move it to the Trash.
Get it back, and know what comes back
Only what rebuilds itself starts ticked. Every row says how it goes and what comes back; anything in use is flagged with how to free it. Dry run is on until you turn it off, and the result is measured, before and after.
Why it’s warm
Every temperature sensor the chip has, the fans against their maximum, and which process is making the heat.
What’s using the battery
Energy impact by process, what’s keeping the Mac awake, the last 24 hours of charge, and the battery’s health.
Who’s on the network
Download and upload by process, connections and round trips, and the link itself. The Wi-Fi name is never shown.
It stays on your Mac
Headroom reads this Mac and keeps what it reads here. It makes no network requests: no account, no analytics, nothing checked in the background.