Mac cleaner · System monitor

Make the Mac you haveenough.

Startup disk almost full. Out of application memory. You can’t add RAM or storage to a MacBook, so Plumby finds what’s eating both and tells you what each thing is. Then you decide.

Notarized by Apple

14-day refunds

v1.14.2macOS 15+ · Apple silicon & Intel

Plumby’s Overview window: the sidebar, the things needing attention, and a board of readings for this Mac’s space, memory, battery, network, cooling and updates

Overview

Good afternoon, Ada

Thursday, 27 August

Ask about this Mac

What is Ada’s MacBook Pro?

What macOS calls it?

What is the installed memory?

What is the memory pressure?

This Mac has almost run out of space

Review all 6

85GB

free, of 995 GB

Photos, updates and saving a file will start to fail

See what is taking the space

Never

This Mac has no backup

Nothing on it exists anywhere else

Set up a backup

3

9.68 GB

updates are waiting to install

9.68 GB to download and unpack

Open Software Update

2

two apps may have left files behind

Plumby cannot look everywhere on this Mac yet. Turn on Full Disk Access and it can check the rest.

Open System Settings

every login

FigmaAgent opens itself when you log in

It starts before you ask it to

Review what opens

2

apps unopened in a year

They go to the Trash, so you can put them back

Review the two apps

Run a checkup

Ask Plumby

Your Mac today

51%

Battery · 37 min left

050100

2 you never open

SpaceMacintosh HD
85GB available
Applications268 GBPhotos179 GBiCloud Drive89 GBSystem data129 GB
Applications268 GB
Awake

Awake all night

Music
2 min
Google Chrome
1 min
Speed

Google Chrome is holding the memory this Mac is short of

Devices

Everything is charged

60%MX Master 3S M
84%Keyboard
62%Headphones
Wi-Fi

Strong where you are

5 GHz1,921 Mbps
Network

44 KB/s down

Wi-Fi629 up
Restart

Restarted 7 days ago

Things get slower the longer you go

+262

286 untouched

2.61 GB in Downloads

Temperature
88°C
Fan3,741 rpm
Normal≤ 85
Updates

3 are behind

macOS Tahoe 26.6.2

Update all
Plumby found
4/12 worth doing
This Mac has no backup
Four apps start at login4
The screen never locks
MacBook PromacOS 26.2 · 32.0 GB

A few things need you

26 GB cleared since you installed it

Applications running

WhatsAppAwake 45 h 34 m

164 MB

hardly any memory

Google ChromeYou were just in it

8.8 GB

a quarter of your memory

PostmanWorking

1.3 GB

hardly any memory

FigmaWorking

739 MB

hardly any memory

DiscordYou were just in it

730 MB

hardly any memory

PaperWorking

376 MB

hardly any memory

12 more are open and none of them needs you.

Sampling every 2 seconds · nothing leaves this Mac

Last full scan 4 minutes ago

Mac cleaner · System monitor · macOS 15+

Every number comes with a plain sentence.

Storage, memory, battery, temperature, startup items and 26 system checks. Every figure read from your own Mac.

MeasuredThe bytes that left, counted as they went. Purgeable space is never in the total.
ReviewedEvery row says where it goes: deleted, or into the Trash so you can put it back.
PrivateNo analytics. Nothing leaves the machine.

One app for your whole Mac.

Free up storage, see what is using your memory, and find out why your Mac slows down.

SpaceMacintosh HD
85GB available
Applications268 GBPhotos179 GBiCloud Drive89 GBSystem data129 GB
Applications268 GB
Awake

Awake all night

Music
2 min
Google Chrome
1 min
Devices

Everything is charged

60%MX Master 3S M
84%Keyboard
62%Headphones
Speed

Google Chrome is holding the memory this Mac is short of

2 you never open

Wi-Fi

Strong where you are

5 GHz1,921 Mbps
MacBook PromacOS 26.2 · 32.0 GB

A few things need you

26 GB cleared since you installed it

Updates

3 are behind

macOS Tahoe 26.6.2

Update all
Temperature
88°C
Fan3,741 rpm
Normal≤ 85
Checkup

Everything macOS knows and won’t show you.

26 checks, read from your own Mac and written in plain words: how worn the battery is, how hot it ran, what starts itself at login, whether the malware definitions are current. Then the repairs, if it found any worth doing.

macOS knows things it never shows you

Twenty-six readings your Mac keeps to itself — how worn the battery is, how hot it ran, what starts itself at login.

A Checkup changes nothing.

  • It reads. It doesn’t touch anything.

    A Checkup changes nothing on your Mac. It reports, and every figure is one you can go and verify somewhere else.

  • The numbers with nowhere to see them

    Your processor’s temperature has no screen anywhere in macOS. Nor does your XProtect version. Your battery’s cycle count is four clicks deep in System Information. All three are here.

  • One password, not six

    The repairs that need an administrator are gathered into one prompt, or none once Plumby’s helper is installed. Nothing to copy and paste, no Terminal.

  • Or just ask it

    On a Mac with Apple Intelligence, ask why it’s slow or what’s filling the disk. Question and answer both stay on the machine.

Clean

Everything your Mac kept without telling you.

Caches, logs, crash reports, old device backups, installers you already ran. Plumby names each one in a sentence, then hands you the list.

Your Mac makes files it never cleans up

Your apps keep copies, updates and leftovers you were never told about.

Looking never removes anything.

  • A sentence, not a folder name

    Each row says what the thing is, what happens if it goes, how much it gives back, and how soon it comes back. If we can’t explain a row in one plain sentence, it doesn’t ship.

  • Two lanes, and it tells you which

    “Gone for good. Your Mac rebuilds this,” or “Moved to the Trash. Undo anytime.” Anything that might be a file of yours takes the second one, always.

  • Your files start unticked

    The Mac’s own clutter arrives ticked, because that’s what you opened this for. Backups, installers and big untouched files are listed first, under your own heading, boxes empty.

  • It says what grows back

    Some caches return the next time you open the app, and Plumby says so before you clean, not after. Purgeable space is reported and never counted in a total.

Everything else, one menu away.

Small jobs that usually mean a support thread and a trip through System Settings. Each one would be its own app somewhere else.

Unstick things.

Flush the DNS cache when a page loads for everyone but you. See what’s holding the drive that won’t eject, then free it.

Apps, removed completely.

Drag-to-Trash leaves the caches, preferences and helpers behind. Plumby lists them by path, then takes them with the app.

Fans & power.

Set fans to Auto, Cool, or Max, flip macOS Energy Mode, and read battery health down to the cycle count.

Meetings & focus.

One tap before you present: desktop icons hidden, mic muted, clipboard cleared, and back the same way.

Startup, trimmed.

Everything that opens itself at login, including the helpers. Unused ones are flagged.

Devices & drives.

Battery levels for every paired Bluetooth device. Eject a stuck drive, and see what was holding it.

Keep-awakeTimed, indefinite, or until the job finishes.
Spotlight reindexRebuild the index when search lies.
Hidden filesHidden files in Finder, one tap on and off.
Copy your IPLocal or public address, straight to the clipboard.
A complete 180 from what I expected. They’ve put a lot of TLC (tender, love and care) into this app, and it shows.
GezimDodoRouter.com
Good app. I love the clean UI/UX and the lack of nagging popups.
Ankur

How Plumby compares.

The difference is where the number comes from, and what the app can touch without asking you first.

Freed-space numberPlumbyMeasured at removalCleanMyMacEstimated totalDaisyDiskYou read the sizes yourself
Who decides what goesPlumbyYou do, item by itemCleanMyMacOne-click sweep optionDaisyDiskYou do, manually
Repairs when something stops workingPlumbyDocumented macOS repairs, one tapCleanMyMacA maintenance moduleDaisyDiskNot its job
Live readings, and something to do about themPlumbyIn the app and the menu barCleanMyMacSeparate menu appDaisyDiskNo
Where cleared files goPlumbyTwo lanes, and each row says whichCleanMyMacVariesDaisyDiskThe Trash
PricingPlumby$19/yr or $59 onceCleanMyMacSubscriptionDaisyDiskOne-time

CleanMyMac and DaisyDisk are good apps, and this stays general on purpose: a spec sheet changes every release. It’s just where Plumby differs.

Why Plumby?

Your files are yours

Anything that might be yours is listed first, with the box empty, and only ever moves to the Trash.

Review first

Every cleanup is an opt-in checklist: you approve exactly what goes.

Confirmed gone

An app isn’t “quit” until Plumby has checked that it actually closed.

Gone, or recoverable

“Gone for good. Your Mac rebuilds this,” or “Moved to the Trash. Undo anytime.” Every row wears one.

A window, or just the menu bar

A full app with a proper window, plus a menu-bar readout. Switch on menu-bar-only and the Dock icon goes.

Set-once helper

One approval at setup. No password prompts after.

Signed and notarized

Developer ID-signed and notarized by Apple, so macOS checks it before it ever opens.

14 days to change your mind

Refundable either way, no reason needed. Ask and it’s done.

Nothing leaves your Mac

No analytics, no telemetry. Your files, processes, and network data stay on the machine.

Measured, not estimated

Every figure is read from the system, never modelled. Nothing is a guess dressed up as a number.

Buy it like a tool, not a service.

Pay yearly, or pay once and get every version we ship. Either way the app is yours, and it keeps working even if you stop.

Free to download.

Install Plumby and see your own numbers: what is filling your disk, what is using your memory, what is inside “System Data”. Buy when you want it cleared.

No account, and nothing expires. 14 days to change your mind.

Download for macOSApple

Annual

$29after the first 100, or 30 September
$19/year

A year of updates, auto-renewing. Cancel any time and the app keeps running; only the updates pause.

Buy Annual

Lifetime

No renewals
$79after the first 100, or 30 September
$59once

One payment, every version we ever ship. No renewal, nothing to cancel, and the price you pay today is the last one you pay.

Buy Lifetime
  • The app works forever, even if you never renew
  • All features from day one
  • Use it on 2 Macs
  • Native macOS app · Apple silicon & Intel
  • 14 days to change your mind
  • No account required

Annual renews automatically and you can cancel anytime; your installed app keeps working, only updates pause. Lifetime includes every version we ever ship. Either plan is refundable for 14 days, no reason needed.

Frequently asked questions.

The ones that come up most, answered straight. If yours isn’t here, the guides below probably cover it.

No. It won’t purge RAM or guess at numbers. It shows the evidence, then checks that every fix worked.