Treemap
Area is size. Nesting is folders.
Disk space, explained
See where your disk went.
DiskDuo scans your Mac in seconds and shows you every byte — nine ways, in colour, all in sync. Then it helps you clear space without ever touching what matters.
Movies34.2 GB
Pictures26.6 GB
code13.3 GB
Music3.81 GB
Documents7.27 GB
Applications8.56 GB
Archives2.65 GB
Library37.8 GB
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.
Folders
One level at a time, as cards.
Sunburst
Rings go deeper as they go out.
Flame
Each row is one level deeper.
Bubbles
Folders as circles, packed inside their parents.
Mind Map
Your largest folders as a radial map.
Top Sizes
Heaviest first. Scroll for the rest.
Age Map
When your bytes were last touched.
Outline
Every folder as an expandable list.
Safe by construction
Nothing is deleted until you say so.
You stage what you want gone. You see the list, and what each item is. You confirm. Then it goes to the Trash — never straight off the disk.
Easy wins
Caches, build output, old simulators and downloads you forgot, found for you.
Duplicates
Byte-identical copies, checked to the byte. Clones that free nothing are left out.
Applications
Each app and everything it left behind, with the reason each file was matched.
Monitor
What is growing right now, folder by folder, as it happens.
Private
Your files stay on your Mac.
No analytics. No crash reporting. No account. DiskDuo contacts us to activate your licence and to check for updates — never to report what is on your disk.
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
Questions
Before you buy.
Does DiskDuo delete anything on its own?
No. Nothing is removed until you stage it, review the list and confirm. Everything goes to the Trash, where you can put it back.
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.
How do I buy it?
Download DiskDuo, sign in with Apple or Google, and buy it inside the app. You pay once, it is yours, and every 1.x update is included.
Which Macs does it run on?
macOS 14 Sonoma or later, on Apple silicon and Intel. One build runs natively on both.