A lightning-fast scan: every folder explored in parallel
Folders are read side by side instead of one after the other, so even a full disk is mapped in moments.
For Mac · macOS 13 or later
A Mac disk cleaner that shows what takes up space. Keep only what matters.
DiskPearl maps every folder and explains what hides inside “System Data”, with help from AI for unknown folders. What you choose goes to the Trash: DiskPearl never deletes anything for good.
Free scanNo subscriptionYour data stays on your Mac
System Data, explained
macOS shows one grey bar. DiskPearl opens it.
In System Settings, “System Data” can weigh 80 GB with no detail at all. DiskPearl rebuilds that category folder by folder, tells you what each one is, and what removing it would cost.
The map
Your whole disk, at a glance.
Each ring is a folder, sized by the space it really takes. Point at one to see what it is.
Point at a ring
—
~/
Sample Mac. System Data appears in orange.
What DiskPearl finds inside System DataSample
- ~/Library/Application Support/MobileSync/Backup24.1 GB iPhone and iPad backupsIrreplaceable
- ~/Library/Developer/Xcode/DerivedData9.8 GB Xcode build productsRebuilt automatically
- ~/.docker12.4 GB Docker images and volumesDownloaded again when needed
- ~/Library/Caches/com.openai.codex1.2 GB App cache · CodexRebuilt automatically
- ~/.npm1.3 GB npm package cacheDownloaded again when needed
- ~/Library/Containers/com.adobe.acc.anc…0.4 GB Left behind by an uninstalled appSafe to remove
Everything to act, nothing to regret
A clear view first. Then a careful clean-up.
Unknown folder? Ask an AI — on your terms
Claude, OpenAI or a model running on your Mac describes what a folder is for. Or copy the question into the assistant you already use — free. Cards you accept stay in your own catalogue.
Real duplicates only
Compared byte for byte, over the whole content. DiskPearl keeps the copy an app depends on and tells you why.
Apps, and what they leave behind
Uninstall an app with its data. What stays behind is grouped by publisher and remembered, so nothing gets forgotten.
The cost of every removal, known in advance
Rebuilt on next launch, downloaded again, reinstall needed, or gone for good: every known folder says so before you decide.
Follow each folder’s size, scan after scan
Every scan is kept. Each folder gets its own curve, the ones that keep growing rise to the top of the list, and a folder you move keeps its history.
~/Library/Developer9.8 GB▲ 6.7 GB
~/Downloads22.7 GB▲ 4.6 GB
~/Pictures/Photos Library55.3 GB+0.4 GB
Sample · six scans, April to September · same vertical scale on every row
Everything goes through the Trash, everything can be restored
Everything you remove goes to the macOS Trash and is logged, so you can put it back from History.
Only space you can really free is counted
APFS clones and hard links are counted once, so the map never promises space that removing a folder would not free.
Privacy
Your disk stays yours.
No account, no telemetryThe scan runs on your Mac and never leaves it. The licence works offline. Nothing is sent unless you choose to.
AI only when you askYou see the exact data before anything is sent — never file contents, only sizes, dates and technical names.
Your names stay maskedApp identifiers pass in clear; your documents, projects and anything bearing your name are replaced by opaque tags. With a local model, nothing leaves your Mac at all.
Contribute to the shared catalogue, a free collaborative resource — only if you want toOff by default. Turn it on and DiskPearl can share cards for technical folders, such as ~/Library/Caches/com.openai.codex — you preview each one before it goes. Never a personal folder or a masked name, and no account: a random install ID at most.
Exactly what would be sent
{
"pseudonymized_path": "~/Library/Caches/com.google.Chrome",
"path_masking": "smart",
"allocated_bytes": 1873412096,
"largest_children": [
{ "name": "Default", "kind": "folder" },
{ "name": "item_3f2a91c0.pdf", "kind": "file" }
]
}
How it works
Three steps, in this order.
Scan
One click measures your whole Mac, including the folders macOS hides from the Finder.
Understand
Walk the map, read what each folder is for and what removing it would cost. Ask an AI for the rest.
Free up space
Move what you choose to the Trash after a clear confirmation. Changed your mind? Put it back.
Pricing
Scan for free. Pay once to act. Never a subscription.
Free
€0no time limit
- Full scan and disk map
- Totals by macOS category, System Data included
- System Data shown on the map
Launch price
Licence
€5per Mac · one-time purchase
Launch price until 31 October. From 1 November: €10 per Mac.
No subscription, ever.
You pay once. No renewal, no hidden plan — every 1.x update is included.
You pay once. No renewal, no hidden plan — every 1.x update is included.
- Full paths and folder details
- AI folder cards and your own catalogue
- Cleaning plan, duplicates, apps and leftovers
- Move anything you choose to the Trash
- Trash history and one-click restore
- Every folder’s size history, scan after scan
AI is optional: it runs with your own Claude or OpenAI account, an API key, a local model, or the assistant you already use. DiskPearl never bills you for it.
Buy for €5macOS 13 Ventura or later · English, French, German, Spanish, Italian, Japanese, Simplified Chinese
Questions
Before you install.
Is there a subscription?
No. You pay once per Mac — €5 at launch, €10 from 1 November — and every 1.x update is included. There is nothing to renew.
Why does DiskPearl ask for Full Disk Access?
macOS keeps Mail, Messages, Safari and other apps’ data out of reach by default. Without access, the scan undercounts and some items cannot go to the Trash. DiskPearl reads to measure; it moves nothing without your confirmation.
Can it remove something important by mistake?
Everything goes to the Trash first and can be restored. System locations, your account’s structure and DiskPearl itself are never offered, and an unknown folder needs an explicit check before it goes.
Does it send my files to an AI?
Never file contents. Only metadata — sizes, dates, technical names — after you have seen exactly what will be sent. You can mask more, use a local model, or skip AI entirely.
What is System Data, exactly?
It is the macOS storage category for everything that fits nowhere else: caches, logs, app support files, developer tools, backups of your devices. DiskPearl rebuilds it and shows it in orange on the map.
How do I receive my licence?
Download DiskPearl and open it, then click “Activate my licence” to copy your Mac’s code. Paste it when you buy: your licence appears on the confirmation page and arrives by email. Paste it into the app and you are done — even offline.
Can I try before buying?
Yes: the scan, the map and the totals by category are free, with no time limit. The licence is delivered as soon as you pay and is not refundable afterwards; your statutory warranties still apply.
Is DiskPearl on the Mac App Store?
No. The App Store sandbox would stop it from reading your whole disk, so DiskPearl is distributed directly from this site.