Guides & comparisons

The Best Free Mac Cleaners, and What They're Good For

Updated November 2, 2026

You don't have to pay to clean up a Mac. The best free "cleaner" is already built into macOS, and a couple of long-running free utilities cover most of what's left. This guide covers the genuinely free options first, then a few low-cost paid tools for people who want more convenience. Prices and details were checked on each official site on November 2, 2026.

Full disclosure: TidyCub is our app. It's a paid app with a free trial, so it's listed separately at the end, not as a "free" pick.

Before you start: what "cleaning" really means on a Mac

• macOS already cleans up after itself. When space is needed, it clears caches and logs that are safe to delete, including interrupted downloads, staged updates and Safari website data (Apple Support).
• Most real space goes to your own files: old downloads, installers, videos, duplicates and iPhone backups. Finding those beats "junk" cleaning.
• Free memory isn't the goal. macOS uses spare RAM to speed things up (see how to clear RAM on Mac).
• Deleted files only free space once the Trash is emptied (Apple Support).

Quick comparison

1. macOS Storage settings (free, built in)

Best for: everyone, as the first stop.

On macOS Ventura 13 or later, choose Apple menu > System Settings > General > Storage (Apple Support). You'll see what's using space by category, and recommendations to:

• Store in iCloud: keep Desktop, Documents and photos in iCloud, with only recent files on your Mac.
• Optimize Storage: remove watched Apple TV movies and shows, and keep only recent email attachments.
• Empty Trash automatically after 30 days.

If a category such as Applications or Documents has a More Info button, click it to review and delete large items. Apple also suggests clearing your Downloads folder, deleting old iPhone or iPad backups, and uninstalling apps you no longer use.

Limits: no duplicate finder, and it won't tidy your Desktop or Downloads for you.

2. Activity Monitor (free, built in)

Best for: figuring out why your Mac feels slow.

Open it from Applications > Utilities. The Memory tab shows Memory Pressure: green means memory is fine, yellow means you might eventually need more, red means you need more (Apple Support). The CPU tab shows which apps are keeping your Mac busy. Use Quit rather than Force Quit when you can, so apps close safely.

3. OnyX (free)

Best for: experienced users who want deep maintenance.

OnyX is a long-standing free utility that can verify system files, delete caches, rebuild databases and indexes, and change hidden settings for Finder, Dock and Safari. There's a specific version for each major macOS release (a version for macOS 27 was released in October 2026), and the developer warns against using a version meant for an older system.

Limits: lots of options with technical names. If you don't know what a task does, leave it.

4. AppCleaner (free)

Best for: removing apps completely.

Drag an app onto AppCleaner and it finds the app's related files so you can remove them together. It's a free download from FreeMacSoft with an optional donation. Version 3.7 is for macOS 15 and later; 3.6.8 covers macOS 10.14 to 15.6.

Limits: it only uninstalls apps; it doesn't look at your other files.

Low-cost paid options worth knowing

DaisyDisk ($9.99 one-time)

DaisyDisk isn't free, but it has a free trial and costs $9.99 once ("not a subscription") for up to 5 personal Macs. It draws your disk as an interactive map so the biggest folders jump out, and can purge macOS snapshots and scan cloud storage. Great if your question is simply "what's filling my disk?"

Paid all-in-one cleaners

If you'd rather have one app for everything, CleanMyMac adds malware scanning and app updates, with plans listed "starting at $3.33/month" on its official site and a 7-day free trial. MacCleaner Pro costs $39.95/year or $85.95 one-time for one Mac. Our CleanMyMac alternatives guide compares these in detail.

TidyCub: paid, with a 7-day free trial

TidyCub is our Mac cleaner. It's not free, but it's a one-time purchase ($4.99) with no subscription, and you can try everything for 7 days first.

It focuses on the clutter that free tools leave to you:

• Tidy Downloads and Desktop into Images, Documents, Installers, Archives, Video, Audio and Other, with screenshots in their own folder.
• Used installers (.dmg, .pkg, .xip) you no longer need.
• Large files above a size you choose, never pre-selected.
• Duplicate files, matched by full content and always keeping one copy.
• App caches and logs in your user Library, skipping Apple's caches and running apps.
• Memory, temperature, fan and battery status in plain language, with a normal Quit for apps.

The safety promise: TidyCub never deletes outright. Removing moves files to the Trash, tidying moves them into subfolders, and History lets you undo any action, even after the trial ends.

Limits: no malware scanning and no app uninstaller (use AppCleaner for that). Requires macOS 13 or later; works on Apple silicon and Intel.

Our suggested free routine

1. Check Storage settings and turn on the recommendations that suit you.
2. Clear out Downloads and old installers by hand, and move what you're unsure about to the Trash, not straight to deletion.
3. Use AppCleaner for apps you no longer use.
4. Open Activity Monitor only when your Mac feels slow.
5. Clear caches only when something misbehaves; see how to clear cache on Mac.

Try TidyCub free for 7 days

If you'd like the tidying done for you, with an undo for everything, download TidyCub and try it free for 7 days. No account needed; keep it with a one-time purchase of $4.99.