MAC Sai for MAC
Free, open-source Mac cleaner: remove junk, uninstall apps, scan for malware, find large and duplicate files, with no subscription.
MAC Sai Overview
Mac Sai is a free, open-source cleaner, optimizer and malware scanner for the Mac, made as an alternative to CleanMyMac. One click on Smart Scan runs its cleanup, protection and performance tools together and shows exactly what it freed. It finds system junk in more than 16 categories, such as caches, logs, unused language files, old iOS backups and Xcode leftovers, and it also cleans mail attachments, Trash bins and regenerable build folders like node_modules.
Beyond cleaning, Mac Sai scans for malware and adware, clears browser history, uninstalls apps with their leftovers, finds unused apps, maps your disk with Space Lens, finds large, old and duplicate files, and shows live CPU, memory, disk and battery in the menu bar. Deleted files go to the Trash first, and a clean can be restored in one click. Mac Sai is made by Iliya Mirzaei, is free and open source under the BSD-3-Clause license, and has no subscription, in-app purchases or telemetry. Version 1.25.7 needs macOS 14 or later and is notarized by Apple.
Key Features
Mac Sai brings a full cleaning toolkit to your Mac for free.
- Smart Scan: run cleanup, protection and performance tools in one click.
- System Junk: caches, logs, language files, iOS backups and more.
- Malware removal: scan for malware and adware at three depths.
- Uninstaller: remove apps with their leftovers, and find unused apps.
- Space Lens: see what fills your disk.
- Large, old and duplicate files: find and clean them.
- Safe by design: files go to the Trash first, and cleans can be restored.
- Menu bar monitor: live CPU, memory, disk and battery.
What’s New in Version 1.25.7
Mac Sai 1.25.7 fixes the icon and language cleanup.
- The app icon no longer shows a black square in the Dock, Launchpad and Finder
- Language cleanup no longer pre-selects the languages your Mac is set to
- The launch at login error message is fully translated
- More reliable notarization of releases
MAC Sai FAQ
Is Mac Sai free?
Yes. Mac Sai is free and open source under the BSD-3-Clause license, with no subscription, in-app purchases or upgrade to Pro.
Which macOS version does Mac Sai need?
Mac Sai 1.25.7 needs macOS 14 Sonoma or later.
Is Mac Sai safe to use?
Deleted files go to the Trash first, protected system paths are blocked, and every operation is logged. Recent cleans can be put back in one click.
Does Mac Sai collect data?
No. It has no analytics, crash reporter or trackers.
Why does Mac Sai ask for Full Disk Access?
Full Disk Access lets it scan every location, so you get complete results. You grant it in System Settings.
Can Mac Sai remove malware?
Yes. It scans launch agents, app bundles, browser extensions and known adware and malware patterns at three depths.
Can Mac Sai uninstall apps?
Yes. Its Uninstaller removes apps with their leftover files and can reset an app to its defaults.
Is Mac Sai notarized by Apple?
Yes. The download is notarized by Apple, so it opens without warnings.
Can I install Mac Sai with Homebrew?
Yes. Run brew install --cask mac-sai.
Where does the Mac Sai download on mac-sai.FULLMAC.app come from?
The download button leads to the official Mac Sai releases on GitHub at https://github.com/iliyami/MacSai/releases/latest. mac-sai.FULLMAC.app does not change or repackage the app.
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FULLMAC.app does not host this app. Download buttons lead to the developer’s own pages.