Is CleanMyMac Worth It? A Security Engineer's Honest Take

CleanMyMac by MacPaw is one of the best-known Mac utility apps on the market. It has been around for years, has millions of users, and regularly shows up in "best Mac apps" lists. If you have ever searched for a way to clean up or optimize your Mac, you have probably come across it.

But here is the question we want to answer honestly: does CleanMyMac actually keep your Mac secure? Or is it solving a different problem entirely?

As a team that builds security software, we have spent a lot of time analyzing what tools like CleanMyMac do and do not do. This is our honest, straightforward assessment.

What CleanMyMac does well

Let us give credit where it is due. CleanMyMac is good at what it is designed to do.

Disk cleanup

CleanMyMac excels at finding and removing junk files, including system caches, log files, language files, old iOS backups, and broken downloads. It can reclaim significant disk space, sometimes tens of gigabytes on machines that have never been cleaned.

App uninstallation

When you drag an app to the Trash on a Mac, it often leaves behind preference files, caches, and support files scattered across your system. CleanMyMac's uninstaller finds and removes these leftover files, giving you a cleaner uninstall.

Performance optimization

CleanMyMac includes tools to free up RAM, manage startup items, and speed up your Mac by clearing caches and temporary files. These features work and can provide a noticeable performance boost, especially on older machines.

Malware removal (basic)

CleanMyMac does include a malware scanner. It checks your system against a database of known Mac malware and can remove threats it identifies. This is useful and catches common Mac malware like adware and potentially unwanted programs.

What CleanMyMac does not do

This is where it gets important. CleanMyMac is primarily a system optimization tool with some security features added on. It is not, and does not claim to be, a comprehensive security solution. Here is what it misses.

No YARA rules engine

YARA is the industry standard for pattern-based malware detection. Security researchers and enterprise tools use YARA rules to identify malware based on patterns in code, behavior, and structure. CleanMyMac does not use YARA scanning. This means it can only detect malware that is in its specific signature database, not malware that matches broader behavioral patterns.

No code signature verification

Every legitimate Mac app should be signed by its developer and ideally notarized by Apple. Code signature verification checks that apps have not been tampered with, that their certificates are valid, and that they come from who they claim to be from.

CleanMyMac does not verify code signatures. This means it cannot tell you if an app's signature has been revoked, if an app has been modified after signing, or if an app is completely unsigned.

No AI-powered behavioral analysis

CleanMyMac's malware scanner is signature-based. It compares files against a known threat database. It does not analyze the behavior of running processes to detect suspicious activity.

AI-based behavioral analysis can catch threats that signatures miss. It evaluates what software is actually doing, not just what it looks like, and can identify novel threats that have never been cataloged.

No comprehensive privacy audit

CleanMyMac has some privacy features, like clearing browser data and removing chat histories. But it does not perform a comprehensive audit of your privacy permissions.

It does not show you which apps have camera access, microphone access, screen recording access, or full disk access. It does not flag unusual or excessive permission grants. It does not help you understand or manage the permission landscape on your Mac.

No network monitoring

CleanMyMac does not analyze your network connections. It cannot tell you which apps are connecting to the internet, what servers they are reaching, or how much data they are sending. Network monitoring is essential for detecting data exfiltration, unauthorized communication, and suspicious connections.

No certificate chain analysis

Beyond code signing, CleanMyMac does not analyze the certificate chains of your installed software. Certificate chain analysis can reveal compromised or fraudulent certificates, expired signing identities, and software that was signed with certificates that have since been revoked.

CleanMyMac vs CoreLock: what is the difference?

The simplest way to put it: CleanMyMac is an optimization tool with basic security features. CoreLock is a security tool built from the ground up.

Here is a direct comparison:

Disk cleanup and junk removal. CleanMyMac does this. CoreLock does not. If your primary goal is reclaiming disk space, CleanMyMac is the right tool.

Malware detection. CleanMyMac uses signature-based detection. CoreLock uses AI behavioral analysis, YARA pattern matching, and hash-based scanning together. CoreLock catches more types of threats.

Privacy auditing. CleanMyMac clears browser data and chat histories. CoreLock audits all privacy permissions, including camera, microphone, screen recording, accessibility, and full disk access, and flags unusual grants.

Process analysis. CleanMyMac does not analyze running processes. CoreLock scans every running process, verifies code signatures, and identifies suspicious behavior.

Network monitoring. CleanMyMac does not monitor network connections. CoreLock analyzes active network connections and flags suspicious activity.

Startup item analysis. Both tools can manage startup items. CoreLock additionally scans for hidden launch agents and daemons that do not appear in System Settings.

Explaining what it finds. CleanMyMac shows results in a clean interface but with limited explanation. CoreLock explains every finding in plain English, including why it matters and what to do about it.

So is CleanMyMac worth it?

Yes, for what it does. CleanMyMac is a solid disk cleanup and optimization tool. If your Mac is running out of space, running slowly due to accumulated junk, or you want a cleaner uninstall experience, CleanMyMac delivers.

But if your goal is genuinely understanding your Mac's security posture, knowing what processes are running, what permissions apps have, whether your software is properly signed, and whether anything suspicious is happening, CleanMyMac is not the right tool. It was not designed for that.

Our honest recommendation

Use the right tool for the job. If you want to clean up disk space, CleanMyMac is great. If you want to understand and improve your Mac's security, you need a dedicated security tool.

Try CoreLock for free at corelock.ai/download. Run a scan and see what CleanMyMac does not show you. No credit card required.