Free CleanMyMac alternatives in 2026, compared honestly

Comparison · 7 min read · By Kapil Upadhyay at Logicspark · Published 8 September 2026 · Updated 12 September 2026

CleanMyMac is a competent product and a paid subscription — advertised from $3.33 per month on macpaw.com, checked on 12 September 2026 — and it bundles malware scanning, an app uninstaller and maintenance routines alongside the cleaning. The alternatives below are free, and each does one job well. There is also a direct Dustloft and CleanMyMac comparison, including the cases where CleanMyMac is the better choice.

The comparison

GrandPerspective

Draws your disk as a treemap where each rectangle is a file, sized proportionally. A single enormous forgotten file is instantly obvious — this is the fastest way to spot a 300 GB screen recording. It shows you where space went but does not classify anything, so you decide what is safe.

OmniDiskSweeper

A plain, fast column browser sorted by size. No visualisation, no interpretation. Many people prefer it precisely because it does nothing clever. Like GrandPerspective, it will happily show you files you must not delete, so it needs judgement. If you would rather install nothing at all, du and mdfind in Terminal cover the same ground and are already on the machine.

AppCleaner and Pearcleaner

Both solve the leftovers problem: dragging an application to the Trash removes the bundle but leaves its container and support files behind, sometimes for years. Pearcleaner is open source and also finds orphaned files from apps that are already gone.

OnyX

A long-standing free maintenance utility — cache clearing, maintenance scripts, verification tasks. Powerful and somewhat unforgiving; it assumes you know what each option does.

Where Dustloft fits

The tools above either show you raw file sizes, or clean one specific thing. None of them answers the question most people actually have, which is what is this 187 GB block labelled System Data, and which parts of it can I safely delete?

Dustloft sorts everything it finds into three tiers — things that rebuild themselves, things needing an administrator prompt, and things that cannot be recovered — and it refuses in code to touch four categories: .git directories, cloud-synced folders, Docker volumes and your database directories. It is free, open source and has no subscription. The only thing it ever sends is an anonymous count — a random identifier, a total of bytes reclaimed, and a version number — which you can switch off in the app; see the privacy note.

What none of them can do

No third-party tool can reliably reclaim purgeable space. That is managed by macOS itself. Any product advertising it as a feature is overpromising, and this is worth knowing before you pay for anything.

Common questions

What is the best free alternative to CleanMyMac?

There is no single replacement. GrandPerspective and OmniDiskSweeper show what fills a disk, AppCleaner and Pearcleaner remove app leftovers, OnyX handles system maintenance, and Dustloft explains and reclaims System Data. All are free.

Is CleanMyMac worth paying for?

It works, but it is a subscription and every job it does has a free equivalent. The main thing you pay for is having them in one interface.

Can any Mac cleaner reclaim purgeable space?

No. Purgeable space is managed by macOS and no third-party application can reliably free it. Tools advertising this are overpromising.