macOS desktop app Apple silicon macOS 15 or later

Free up your Mac without breaking anything.

Diskwise scans your Mac for real: what fills your disk, what slows it down and what is still running. Sizes are honest, and every fix is one click.

Checking whether Diskwise runs on this computer

Try the real thing

Click around the real app. It shows a real scan of the maker's Mac, and nothing you click here touches yours.The real app, with a real scan of the maker's Mac. Open this page on a Mac to click around in it.

Diskwise FileEditViewWindow
Sat 10 Oct 16:24
Click 24.5 GB to open the menu bar panel
DiskwiseScanned 2 min ago

Nothing urgent right now

Diskwise keeps watching and tells you when something starts to slow your Mac or fill your disk.

SpeedFine
26%of the processor busy
Nothing busy in the background
MemoryFine
54%free
7.1 GB swapped to your disk
DiskOK
24.5 GBfree of 245 GB
About 4 days at your pace, 36.7 GB can go
ALL CLEAR
Nothing needs you right nowDiskwise keeps watching and tells you when something starts to slow your Mac.
Next up 0
Nothing else right now.
Can wait 1
Clear 9.8 GB of cachesCan wait9.8 GB of disk back, refilled as you work
Watching in the background. You get an alert when an app you are not using keeps the processor busy, or memory stays tight, for 10 minutes, or when free space drops under 10 GB.
Done

It speaks up only when it matters

Diskwise watches quietly from the menu bar. When something really slows your Mac, you get one alert with a button that fixes it.

  • An app you aren't using keeps the processor busy for 10 minutes.
  • Memory stays tight for 10 minutes and your Mac starts writing it to the disk.
  • Free space drops under 10 GB, and again under 5 GB.

Careful by design

A cleaner can do real damage, so Diskwise follows five rules everywhere. No account, no tracking: the only thing it ever sends is your licence key.

What it found on the Mac it was built on

Diskwise was built on a Mac that kept filling up. This is what it found there in one week.

9.5GB of swap

Memory spilled onto the disk just nine hours after a restart. Chrome alone held 9.9 GB.

1.4cores busy

System Settings' storage panel kept them busy for two and a half hours, open in the background.

3leftovers

Leftover Wrangler processes ran for 16 hours after the app that started them quit.

2.8GB of copies

Five apps in one folder each carried the same 368 packages. One shared copy would take 618 MB.

Scan free. Fix it for $24, once.

Download Diskwise and run your first scan free. If you like what it finds, the lifetime licence unlocks every fix.

$0no card
Free scan
  • One full scan of your Mac
  • Every cache, build folder and big file, sized honestly
  • What slows your Mac and what is still running
  • Your project folders and what runs in them
  • Your free space in the menu bar, always
Download free

From download to your first scan

  1. Download DiskwiseOpen the disk image and drag Diskwise into Applications.
  2. Open it onceIf macOS says it can't verify the app, open System Settings, then Privacy & Security, and click Open Anyway. Once per version.
  3. Allow your foldersmacOS asks before Diskwise can look in Documents, Desktop and Downloads.
  4. See your scanEverything it found, sized honestly, with the one thing worth doing first.

Questions

Can't find your answer? Write to the person who built it.

Yes. Download Diskwise and run one full scan with no account and no card. It shows everything it finds, and your free space stays in the menu bar. Fixing what it finds, scanning again, the full menu bar panel and alerts need the $24 lifetime licence.

You pay $24 once and keep using Diskwise for as long as you like, on up to 3 of your Macs. Every update to version 1 is included. There is no subscription.

Yes. Email support@diskwise.app within 14 days of buying and you get your money back, no questions asked.

Diskwise is a macOS desktop app for Macs with Apple silicon (M1 or newer) running macOS 15 Sequoia or later. It doesn't run on iPhone, iPad, Windows or Linux.

Browsers don't let any website see your disk, apps or memory, even with permission. The scan has to run in the app, on your Mac.

No. Nothing is removed until you review the list and click the button. Caches and build folders are deleted because they come back on their own. Anything else goes to the Trash.

No. Your files, scans and history never leave your Mac, and there is no account or analytics. The only thing Diskwise sends is your licence key, when it checks it.

Access to Documents, Desktop and Downloads, to find build folders and big downloads. Notifications, for alerts. And control of Finder, only when you click Empty Trash.

In the background it checks once a minute and uses about 0.2% of one processor core, measured on the Mac it was built on. With its window open it updates every 3 seconds, which costs more while you watch. A disk scan runs when you open the window, at most once every 10 minutes.

See what your Mac is holding on to.

Your first scan is free. No account, and nothing about your Mac leaves it.