System Monitor for macOS
Free, native, and built for Apple Silicon. Real-time CPU, memory, disk, network, and battery metrics live in your menu bar — no subscriptions, no telemetry, no clutter.
Choose how Mactor appears: icon only, live values, or both — right in the menu bar, always at a glance without switching apps.
Tap any metric for a detailed view — Apple Charts-powered donuts, per-core bars, and network history. Designed to feel like a first-party macOS app.
Instantly see which app is hogging your CPU or RAM — updated every poll cycle, directly in the menu bar popover.
No third-party frameworks. No background agents. Built with SwiftUI and AppKit for Apple Silicon. Toggle any metric on or off and set your preferred refresh interval.
New in v2.0
Your menu bar monitor, extended with a growing suite of cleaning and optimization tools.
Scan and remove user caches, app logs, and mail downloads in one tap — files go to Trash.
Surface the biggest files on your Mac, sort by size, and free up space fast.
Completely remove apps and all their leftovers in one step.
Control what launches at startup to keep your Mac snappy.
Reclaim unused RAM when you need it most.
Routine system maintenance with a single click.
Zero data collected. No account required. No tracking. Everything stays on your Mac — always. Read the full Mactor privacy policy.
Yes. Mactor is free to download and use on macOS 13 or later. Mactor Pro adds an optional suite of cleaning and optimization tools on top of the free monitor.
No. Mactor collects, stores and transmits nothing. Every metric is read from local macOS system APIs and never leaves your Mac. There are no analytics SDKs, ad networks or crash reporters in the app.
Yes. Mactor is built natively with SwiftUI and AppKit for Apple Silicon, with no third-party frameworks and no background agents.
The download is 11.9 MB. Mactor runs as a single lightweight menu bar process, and you can disable any metric you do not need or lengthen the refresh interval to reduce its footprint further.