DiskDuo

A Shaheer Malik product

See where your disk went.

DiskDuo measures every folder on your Mac, draws the answer nine ways, and clears space you can take back: caches go for good, anything of yours waits in Recovery for Undo, and the space it reports is the space the disk actually gained.

$7.99 once — yours for life. No subscription, no account to keep. The demo needs no sign-up. macOS 14 or later, Apple silicon and Intel.

DiskDuo Smart Care after a scan: junk to clean, apps to update and the disk split by kind
  • 9ways to read one scan
  • 0bytes of your data sent anywhere
  • 1payment, then it is yours

Try it first

The whole app, in your browser.

Not a video and not a tour: the real interface, already loaded with a finished scan, with every screen working. Open the treemap, stage a cleanup, read the security check. No download, no sign-up, no email.

Open the demo

Nine views

One scan, seen every way it makes sense.

Every view reads the same scan and keeps the same selection. Pick a folder in the treemap and it is still picked in the sunburst, the list and the map.

The Treemap view in DiskDuo
TreemapArea is size. Nesting is folders.
The Folders view in DiskDuo
FoldersOne level at a time, as cards.
The Sunburst view in DiskDuo
SunburstRings go deeper as they go out.
The Flame view in DiskDuo
FlameEach row is one level deeper.
The Bubbles view in DiskDuo
BubblesFolders packed inside their parents.
The Mind Map view in DiskDuo
Mind MapYour largest folders, radially.
The Top Sizes view in DiskDuo
Top SizesHeaviest first. Scroll for the rest.
The Age Map view in DiskDuo
Age MapWhen your bytes were last touched.
The Outline view in DiskDuo
OutlineEvery folder as an expandable list.

Quick Scan

Junk gone in seconds.

Most people open a disk cleaner wanting space back, not a map. Quick Scan looks only where junk collects — caches, logs, build output, Xcode derived data, and the caches six package managers keep — and is done in about five seconds. Then one button clears it.

  • About five seconds, not a full measure of the disk
  • Caches, logs, build output and package downloads
  • Everything listed before anything moves

More about quick scan

Quick Scan on the Home screen, showing junk found and a button to clear it

Agents

What your coding tools are really using.

Coding assistants are among the heaviest things on a developer disk and nothing measures them. DiskDuo finds Claude Code, Claude, Codex, Cursor, Gemini, Copilot and the rest, shows what each is using and which of it is cache, and reads their own session files for what those sessions cost in tokens.

  • Space per agent, and which of it is throwaway
  • Sessions, replies and tokens from their own logs
  • Read from your disk — no account, nothing sent

More about agents

The Agents section listing coding assistants with the space each is using

Cleanup

Nothing goes until you say so.

Stage what you want gone and review the list: what each item is, where it came from, and what it frees. Then caches that rebuild themselves are removed, and everything else is held in DiskDuo’s Recovery, where Undo puts it back. The parts of macOS that must not be touched cannot be staged at all.

  • Caches, build output and old simulators, found for you
  • Every removal re-checked in the engine
  • Undo from Recovery, for every clean

More about cleanup

The cleanup sheet listing staged items with their sizes

Security

A check-up for the rest of your Mac.

DiskDuo reads the protections macOS already has — System Integrity Protection, Gatekeeper, FileVault, the firewall, XProtect — and says plainly which are on. It lists what starts by itself, which apps can see your screen or read every file, and what your browser extensions can reach.

  • Green, amber or red, by what it found
  • Login items and background agents, judged by signature
  • Permissions and extensions, in plain words

More about security

The security overview with the protections score and check cards

Malware scan

Apple's own signatures, run on demand.

The malware scan uses the XProtect rules already on your Mac, over your apps, downloads, shared and temporary folders, and everything that starts by itself. No signatures to download, nothing uploaded, and anything found can be moved to Recovery, where whatever started it can no longer find it.

  • Hundreds of rules, kept current by macOS
  • Reads programs only, so it finishes in seconds
  • Nothing about your files leaves the machine

More about malware scan

The malware scan reporting no known malware

Duplicates

Identical to the byte, or not at all.

Sizes, then edges, then a full hash, then a byte-for-byte comparison. Copies that are clones on APFS free no space, so they are left out rather than counted as a win.

  • Keep the newest, the oldest or the shortest path
  • Clones recognised and skipped
  • Every extra copy staged, never deleted outright

More about duplicates

Duplicate groups with the space that could be reclaimed

Applications

Uninstall, with everything left behind.

Each app with its real footprint, when you last opened it, whether Apple notarized it, and every file it has put around your Mac — with the reason each one was matched to it.

  • Caches, containers, preferences and helpers
  • Unused for 90 days, in one press
  • Asks the app to quit first, the way the Dock does

More about applications

An app selected, showing its footprint and the files it left behind

Monitor

What your Mac is doing, right now.

Processor, memory, network and disk, measured every second and drawn beside the last ninety, so a spike reads as a spike. The menu bar keeps free space in view, with the same figures a click away.

  • The apps working hardest, and a way to quit them
  • Free space over the last days
  • A popover that opens over whatever you are in

More about monitor

The activity view with processor, memory, network and disk graphs

Verified

Every clean is checked, then kept on record.

After a clean, DiskDuo reads the disk again. It tells you what went for good, what waits in Recovery, and how much free space the disk really gained — and My Activity keeps every run, so you can see what changed and undo what you need.

A finished cleanup: removed for good, moved to Recovery, and the disk space gained, measured
My Activity: every cleanup on record, the space trend and live Mac readings

What it costs

Bought once, not rented every year.

Mac cleaners are sold by subscription. DiskDuo is sold once and stays yours, including every 1.x update. Here is what four years looks like.

  • DiskDuo$7.99Once. Four years: $7.99
  • CleanMyMac$39.95/yrFour years: $159.80
  • DaisyDisk$9.99Once, and it maps only. Four years: $9.99

Competitor prices checked in September 2026 — verify on their site, since this can change. DiskDuo is $7.99 while it is new; it will not stay there for ever.

From the maker

One person builds this, and answers for it.

Shaheer Malik, who makes DiskDuo

I built DiskDuo because the tools that clear space on a Mac ask you to trust them twice: once with your files, and again with a subscription. I did not want to do either.

So DiskDuo shows its working. Every figure comes from your own disk, measured in front of you. Nothing is removed until you have seen the list and said yes, and anything of yours is held in Recovery, where Undo puts it back. There is no analytics, no crash reporting and no account to keep. You pay once.

If it ever gets something wrong, write to me and I will fix it. My name is on it.

Shaheer MalikFounder and developer, DiskDuo · me@shaheermalik.com

  • Signed and notarizedChecked by Apple before it opens, on Apple silicon and Intel.
  • No telemetryNo analytics, no crash reporting, nothing about your files sent anywhere.
  • One paymentNo subscription, no renewal, no upsell inside the app.
  • Recovery, not deleteEvery removal is reversible, and macOS itself is off limits.

Compared

Bought once, not rented.

Most Mac cleaners are sold by the year. DiskDuo is sold once, shows you what it is about to do, and leaves your files where they are until you say otherwise.

DiskDuo vs CleanMyMac

A yearly subscription against one payment, and what each one shows you before it cleans.

Read the comparison

DiskDuo vs CCleaner

A Windows tool with a Mac build, against one written for macOS alone.

Read the comparison

DiskDuo vs Wise Disk Cleaner

Free on Windows, absent on the Mac. What to use instead, and why.

Read the comparison

DiskDuo vs DaisyDisk

A beautiful map, against a map that also cleans, uninstalls and checks your security.

Read the comparison

Private

Your files stay on your Mac.

No analytics. No crash reporting. DiskDuo contacts us to activate your licence and to look for updates — never to report what is on your disk. The malware scan uses the signatures macOS already keeps, so even that stays local. This website counts visits, as websites do; the app is the part that holds your files, and it counts nothing.

Pricing

Pay once. Keep it.

DiskDuo for Mac

$7.99

  • Lifetime licence — pay once, keep it
  • Every 1.x update included
  • One Mac at a time, and you can move it
  • Works offline for up to 14 days between checks
Download DiskDuo

Questions

Before you buy.

Does DiskDuo delete anything on its own?

No. Nothing is removed until you stage it, review the list and confirm. Anything of yours is held in Recovery, where Undo puts it back; only what rebuilds itself is removed for good.

Can it break macOS?

The system folders are blocked outright — not hidden, blocked, in the engine rather than the interface. DiskDuo will not stage them however they are reached.

What leaves my Mac?

Nothing about your files. DiskDuo has no analytics and no crash reporting. It talks to our server to sign you in, to check your licence and to look for updates, and that is all.

Is DiskDuo a subscription?

No. You pay once and keep it, and every 1.x update is included. It works on one Mac at a time and moves with you to a new one.

Do I have to grant Full Disk Access?

Only if you want the whole picture. Without it DiskDuo still scans and still cleans; some folders macOS keeps private are simply missing from the total, and the app says so.

What do I see when I open it again?

What the last scan found, with the date it was taken and a Scan again button. It never opens on an empty screen.

Which Macs does it run on?

macOS 14 Sonoma or later, on Apple silicon and Intel. One build runs natively on both.

Read the documentation

Find out where it all went.

macOS 14 or later, Apple silicon and Intel. Universal, signed and notarized.

Download DiskDuo