CleanDisk vs DaisyDisk vs CleanMyMac vs OnyX — Which Mac Cleaner Is Best in 2026?

Updated March 2026 · 14 min read

Your Mac is running out of space. You search "best Mac cleaner" and find dozens of options — some free, some expensive, some sketchy. Which one should you actually trust with your files?

We've tested the four most popular and reputable Mac cleaning tools head-to-head: CleanDisk, DaisyDisk, CleanMyMac X, and OnyX. This is an honest comparison — and yes, we make CleanDisk, so take our perspective into account. We'll tell you where the others are better, too.

Quick comparison

CleanDisk — focused cache cleaner

Price: Free scan. $2.99/month or $19.99/year to delete files.

Full disclosure: we make CleanDisk. We built it because we wanted a cache cleaner that does one thing well — find reclaimable cache files and tell you which ones are safe to delete.

What it does well

• Safety labels on every item. Every file and folder CleanDisk finds is labeled Safe, Review, or Protected. You never have to guess whether deleting something will break an app.
• Fast, focused scan. CleanDisk scans 5 categories (app caches, package caches, app data, logs, old downloads) in under 60 seconds. It doesn't try to be a system optimizer or malware scanner.
• Native SwiftUI. Built specifically for macOS Tahoe. No Electron, no web views. The app feels like it belongs on your Mac.
• Cheapest subscription. At $2.99/month, it's the most affordable paid option for ongoing cache cleaning.

Where it falls short

• No disk visualization. If you want to see a visual map of your entire disk (not just caches), DaisyDisk is far better.
• No malware scanning. If you need antivirus, CleanMyMac includes it; CleanDisk doesn't.
• No app management. Can't uninstall apps or manage startup items. It's purely a cache cleaner.
• New product. CleanMyMac and DaisyDisk have years of track record. We're new.

DaisyDisk — visual disk explorer

Price: $9.99 one-time (Mac App Store or direct).

DaisyDisk has been around since 2010, and for good reason. Its sunburst disk map is one of the best data visualizations on macOS — period. You can see your entire disk at a glance and drill into any segment to find what's consuming space.

What it does well

• Beautiful disk visualization. The animated sunburst map makes it immediately obvious where your space went. Nothing else comes close to this visual clarity.
• One-time purchase. $9.99 and it's yours forever. No subscription, no upsells.
• Scans everything. Not just caches — DaisyDisk shows every file on your disk. Great for finding large files you forgot about (old VM images, ISO files, forgotten projects).
• Polished and reliable. 16 years of development. The team (Software Ambience) has a stellar reputation.

Where it falls short

• No safety guidance. DaisyDisk shows you what's big, but it doesn't tell you whether it's safe to delete. You need to know what ~/Library/Application Support/ is to use it effectively.
• Manual process. You select files/folders manually and drag them to a collection. There's no "scan and clean" workflow — it's an exploration tool, not an automated cleaner.
• Doesn't understand cache categories. It sees ~/Library/Caches/com.google.Chrome/ as a folder, not as "Chrome browser cache (safe to delete)." Context is up to you.

CleanMyMac X — the full toolkit

Price: $39.95/year (subscription) or $89.95 one-time. Free version with limited cleaning.

CleanMyMac X by MacPaw is the most feature-rich option. It's not just a cleaner — it's a system optimizer, malware scanner, app manager, and performance monitor rolled into one.

What it does well

• Smart Scan. One-click scan that checks for junk, malware, and performance issues simultaneously. The most hands-off experience.
• Malware protection. Real-time malware monitoring with a regularly updated database. This is genuinely useful — macOS malware is rare but not nonexistent.
• App management. Complete uninstaller that removes app leftovers, startup item manager, extension manager. These are real value-adds.
• Established product. MacPaw has been shipping Mac software since 2008. Millions of users, extensive documentation, responsive support.

Where it falls short

• Expensive. At $39.95/year, it's 2× the price of CleanDisk's yearly plan and 4× DaisyDisk's one-time cost. You're paying for features you may not use.
• Aggressive upsells. The free version is limited, and the app regularly nudges you toward the paid plan. Some users find this annoying.
• Feature bloat. RAM freeing, "Speed" optimization, and "Maintenance" tasks are of questionable value on modern macOS. Apple's memory management doesn't benefit from third-party "optimization."
• Less transparent about safety. Smart Scan auto-selects what to clean. It's generally safe, but you have less visibility into why something is selected compared to a tool with explicit safety labels.

OnyX — the free power tool

Price: Free (donationware).

OnyX by Titanium Software has been a macOS staple since 2003. It's a system maintenance and optimization tool with deep access to macOS internals — NVRAM, Spotlight index, APFS snapshots, Launch Services database, and more.

What it does well

• Free and no-nonsense. No ads, no upsells, no tracking, no account required. Joel Barrière (the developer) has maintained it as donationware for 23 years.
• Deep system access. Can rebuild Spotlight index, flush DNS, repair disk permissions (legacy), reset Launch Services, clear font caches. These are things no other tool on this list does.
• System and user cache cleaning. Clears both /Library/Caches/ and ~/Library/Caches/ effectively.
• Trusted by professionals. Mac admins and AppleCare advisors have recommended OnyX for decades.

Where it falls short

• Intimidating UI. Tabs, subtabs, checkboxes, system terminology. If you don't know what "rebuild LaunchServices database" means, you probably shouldn't click it.
• No safety guidance. OnyX assumes you know what you're doing. There are no safety labels, no warnings about what will break. It's easy to clear something you shouldn't.
• Version-specific. Each macOS version requires a different OnyX build. You have to download the right version for your OS, and it won't update automatically.
• No creative app awareness. OnyX cleans system caches well, but it doesn't know about Premiere Media Cache, After Effects disk cache, or Xcode DerivedData. These are often the biggest space wasters.

The real question: what do you actually need?

Most people searching for a "Mac cleaner" want one thing: more free disk space. They're not looking for malware scanning or RAM optimization — they just want to reclaim the gigabytes that macOS is mysteriously consuming.

With that in mind:

Price comparison over time

Cost matters, especially for a utility you might use for years:

DaisyDisk is the cheapest long-term if you buy once. CleanDisk's yearly plan is the cheapest subscription. CleanMyMac is the most expensive by a significant margin — though it includes features the others don't.

Our honest take

We built CleanDisk because we saw a gap: there was no cache-focused cleaner with safety labels at a reasonable price. DaisyDisk is wonderful but requires manual knowledge. CleanMyMac is powerful but expensive and bloated. OnyX is great but intimidating.

If cache cleaning is your primary need — and for most Mac users running low on space, it is — CleanDisk is the most focused and affordable option. If you need more than that, we'd genuinely recommend DaisyDisk (for visual exploration) or CleanMyMac (for all-in-one management).

If you're technical and want free, OnyX is excellent. Just know what you're clicking.

Frequently asked questions