Best CleanMyMac Free Alternative Apps for a Slow Mac in 2026

Why people look for a CleanMyMac free alternative

CleanMyMac by MacPaw is a well-known all-in-one suite: junk cleanup, an uninstaller, malware scanning, maintenance tasks and a menu bar monitor. It is sold mainly as a paid subscription, and the free download is limited. That alone sends many people searching for something free.

The other common reasons are practical:

• You only used one feature. Most people run the cleanup or the uninstaller and ignore the rest. Free single-purpose tools cover those well.
• You want something lighter. A focused utility does one job and stays out of the way.
• Cleaning didn't fix the slowness. Deleting caches frees disk space, but it rarely makes a Mac feel faster day to day. Caches also rebuild themselves.

That last point matters most when choosing a replacement, so it is worth a minute before the list.

Cleaning vs. speed: pick the tool for your actual problem

Mac slowdowns usually come from one of three places, and each needs a different kind of tool:

1. Memory pressure. Dozens of Chrome, Edge or Safari tabs and a few heavy apps push memory into swap. Beachballs, laggy typing and slow app switching follow. Disk cleaners do not touch this.
2. Background CPU use. A sync client, an indexer, or a Google Chrome Helper (Renderer) process eating CPU steals speed from the app you are using and heats the Mac.
3. A nearly full startup disk. Under roughly 10% free, macOS has less room for swap and updates. This is where cleaners and disk visualizers help.

If you are not sure which one you have, open Activity Monitor and check the Memory Pressure graph first. Our guide to checking RAM usage on Mac explains how to read it, and Why Is My Mac So Slow? ranks the causes with a fix for each.

1. Mac Ninja: best pick if your Mac feels slow, not full

Mac Ninja is not free, so we will be upfront: it is a paid app with a free 7-day trial, then $9.99 per year or $24.99 once for a lifetime license, each covering up to 3 Macs, with a 14-day money-back guarantee. It earns the first spot because it fixes the two causes of slowness that CleanMyMac-style cleaners and the free tools below do not handle automatically.

What it does

• Sleeps idle browser tabs. Tabs untouched for 15 minutes (adjustable) are unloaded in Chrome, Brave, Edge, Arc, Vivaldi, Opera, Comet, Dia, Chromium and Safari (Safari in Lite mode). They stay in the tab strip and reload when clicked. The visible tab in each window, pinned tabs, incognito windows, tabs playing sound and sites you protect are skipped.
• Calms background CPU and disk hogs. Foreground Boost moves background apps that hog the processor or disk to macOS's own low-priority lane, then gives them full speed the instant you switch back. Apps playing or recording audio are never slowed.
• Explains the slowdown. Right-click the menu bar ninja for a dashboard with live rings for the front app, memory and fast cores, memory pressure over time, each browser's tabs, the heaviest apps with energy use in watts, and apps idle for hours that still hold memory. "Why does my Mac feel slow right now?" gives a plain-English reading, phrased by Apple Intelligence's on-device model on macOS 26.
• Packs away unused apps when the disk is nearly full. Offload Unused Apps (on by default, can be switched off) packs apps unused for 60 days into a small stand-in with the same name and icon. Opening it restores the identical app, usually within a few seconds, with nothing downloaded.
• Cleans up after AI browser agents. With the free Mac Ninja Helper Chrome extension, tab groups left open by agents such as Claude in Chrome are closed after the agent session has been idle for 8 hours (configurable, or off).

Why it is a good CleanMyMac replacement

It never closes your apps or normal tabs, never deletes files, installs no kernel extensions and changes no system files. There is no account, no analytics and no tracking (see the privacy policy).

Who it is not for

Mac Ninja cannot make an old processor faster, and it will not clear a disk full of photos, videos or downloads. It also has no malware scanner or app uninstaller. If disk space is your only problem, the free tools below are the right call.

Free alternatives built into macOS

Three free tools you already have cover a large share of what people buy a cleaner for.

2. Storage settings: best free disk cleanup

Apple's built-in storage manager shows what fills your disk and offers one-click recommendations. It is the closest free match to CleanMyMac's cleanup.

1. Open the Apple menu > System Settings > General > Storage.
2. Review the recommendations: Store in iCloud, Optimize Storage and Empty Trash Automatically.
3. Click the info button next to categories such as Applications, Documents or iOS Files to see the largest items and delete what you no longer need.

3. Activity Monitor: best free performance monitor

Activity Monitor (Applications > Utilities, or press Command-Space and type its name) shows exactly which app is using memory, CPU, energy or disk. Sort the CPU tab by % CPU to find a runaway process, and use the Memory tab's pressure graph to see whether you are swapping. You can quit a process with the Stop button in the toolbar. It shows the problem well but does not fix anything on its own.

4. Chrome Memory Saver: best free tab fix for Chrome only

Chrome can discard inactive tabs by itself. Go to Chrome menu > Settings > Performance and turn on Memory Saver. It is free and effective for Chrome, but it only manages Chrome, gives you little control over timing, and does nothing about background apps. Our guide to clearing RAM on Mac covers the other quick memory fixes.

Free third-party apps (and one paid specialist)

5. OnyX: best free maintenance toolkit

OnyX from Titanium Software is a long-running free utility that runs macOS maintenance scripts, clears system and user caches, and exposes hidden settings. A separate version is released for each macOS version, so download the one that matches your Mac. It asks for your admin password and offers many options; the defaults are the sensible starting point, and there is no need to run it often.

6. AppCleaner: best free uninstaller

AppCleaner by FreeMacSoft is a free drag-and-drop uninstaller. Drop an app onto its window and it lists the preference files, caches and support folders that dragging to the Trash leaves behind, so you can remove them together. It replaces CleanMyMac's uninstaller for most people.

7. OmniDiskSweeper: best free disk space finder

OmniDiskSweeper from The Omni Group is a free app that lists every folder on a drive sorted by size. It is the fastest way to find the forgotten 40 GB folder of old video exports or simulator data. It shows and deletes; it does not recommend, so check what a folder is before removing it.

8. App Tamer: paid CPU limiter

App Tamer from St. Clair Software is a paid utility that slows or pauses background apps to cut CPU use and save battery, with per-app rules. It is a good fit if you want fine manual control over individual apps. It does not unload browser tabs.

Side-by-side comparison

How to choose

• Your disk is nearly full: start with Storage settings, then OmniDiskSweeper for large folders and AppCleaner to remove apps you no longer use. All free.
• Your Mac beachballs with lots of tabs open: the problem is memory, not junk. Chrome Memory Saver helps if you only use Chrome; Mac Ninja covers every major browser and keeps tabs in place.
• Fans spin up and the Mac runs hot: find the process in Activity Monitor, then use Mac Ninja to calm it automatically or App Tamer for manual rules. See MacBook overheating causes for more.
• You have an 8 GB MacBook Air: memory is the bottleneck almost every time. Our MacBook Air slow fixes guide goes deeper.
• You want occasional maintenance: OnyX a few times a year is plenty.

For a wider view that includes paid suites, read our roundup of the best Mac cleaner apps.

What to do next

1. Open Activity Monitor and check the Memory Pressure graph and the % CPU column while your Mac feels slow.
2. If memory or background apps are the issue, download the Mac Ninja free trial and use it for a normal work week. Setup help, including allowing Chrome access, is on the support page.
3. If disk space is the issue, use System Settings > General > Storage first, then the free tools above.
4. If Mac Ninja helps, choose a plan on the pricing section; you have 14 days to request a refund.