Your disk is almost fullSave space by optimizing storage.
nowThe warning that keeps coming back
Delete a few things and it soon returns. Without seeing what’s big, cleaning up is guesswork.
When your Mac says it’s fullDiskTree for Mac
Disk almost full? See exactly why.
DiskTree draws your Mac’s folders to scale, coloured by kind, so whatever is taking up your space stands out at a glance. Explore free. Pay once to clean up.
For Mac computers with Apple silicon, macOS 11 or later. 5.7 MB download, notarized by Apple.
Or try an example map in your browser firstOpen the ZIP, drag DiskTree to Applications, then open it. Install help
The real DiskTree 1.0 app, scanning an example home folder.
macOS tells you it’s full. Not what’s filling it.
You’ve probably seen at least one of these. None of them shows you the cause.
Macintosh HD14.2 GB available of 494.4 GB
ApplicationsDocumentsPhotosDevelopermacOSSystem Data
Documents112.3 GBi
System Data158.0 GB
The biggest slice you can’t open
Storage settings gives totals by category. For System Data, Apple’s own guide says: “You can’t manage the contents of this category.”
What’s in System DataNameSizeKind
- Desktop--Folder
- Documents--Folder
- Downloads--Folder
- Movies--Folder
- Projects--Folder
- Library--Folder
- .ollama--Folder
Folders without sizes
Finder shows two dashes for a folder’s size until you ask it to add things up, and it hides your Library and dot-folders.
Find large files on a MacFree space for a macOS update
Needs26.0 GB
Free14.2 GB
11.8 GB short
The update that won’t fit
A macOS update needs free space before it will install. Finding it fast, without deleting the wrong thing, is the hard part.
What’s taking up spaceIllustrations. Sizes are examples.
Big folders stand out.
Each folder and file is a rectangle, sized by the space it takes and coloured by what it is. Try it on an example home folder.
- Media
- Cache
- Code
- Toolchains
- Documents
- Synced
- Git
- Agent scratch
Your task: find the 22.6 GB build cache Xcode left behind. Hint: it’s in Library.
Pictures142.6 GB
Library80.6 GB
Movies61.0 GB
Projects29.8 GB
Downloads24.3 GB
.ollama18.4 GB
Documents9.7 GB
Music7.5 GB
.claude
Select a tile to see its size.
Review
In DiskTree, Move to Trash is the one paid feature ($14.99 once). Items go to the macOS Trash, and you get the space back when you empty it. Here, nothing on your Mac is touched.
Scanning, marking and review are free. Move to Trash unlocks with a one-time $14.99 purchase.
An example with made-up files. It can’t see your disk.
In the app, the arrow keys move, Enter opens, Space or X marks, C opens the review, / filters and ? shows every key. The map can also show file counts, to find folders full of tiny files, or age, to spot what you haven’t touched in a year.
Made for developer Macs, too.
Build caches, simulators, dependencies, toolchains and models pile up where Finder doesn’t look. DiskTree knows them by name and gives each kind its own colour.
Colours say what something is, not whether it’s safe to remove. You decide that.
Where developer disk space goes-
DerivedDataCache
~/Library/ Developer/ Xcode/ DerivedData Xcode rebuilds it.
-
SimulatorsToolchains
~/Library/ Developer/ CoreSimulator xcrun simctl delete unavailable -
node_modulesCache
next to each
package.jsonYour package manager restores it.
-
npm cacheToolchains
~/.npm npm cache clean --force -
Ollama modelsMedia
~/.ollama ollama rm <model> -
Agent worktreesAgent scratch
worktrees inside
.claude.codex.cursorgit worktree remove <path>
Nothing moves until you say so.
DiskTree shows you what’s there. Every decision stays yours.
You make every call.
There’s no automatic cleanup and no “smart clean” list. Marking only changes a selection, and you review every path and size before you confirm.
Trash, never delete.
Items go to the macOS Trash, and you get the space back when you empty it; until then, you can drag them back. DiskTree has no permanent delete and never empties your Trash. It won’t move your disk’s root, your home folder, system folders or the folder you scanned.
Stays on your Mac.
Scans run locally, with no account and no app analytics. Checkout and activation never see your scan, file names or sizes, and after activating once, DiskTree works offline.
How DiskTree compares.
There are good tools for this. Here’s a fair look at the differences.
| DiskTree | DaisyDisk | GrandPerspective | CleanMyMac | Storage settings | |
|---|---|---|---|---|---|
| Price | Free to explore. $14.99 once to clean up. | $9.99 once | Free (open source), $2.99 on the App Store | Subscription, or a one-time option | Built in |
| Macs per licence | 2 | Up to 5 personal | — | Depends on plan | — |
| What you see | Treemap, colour-coded by kind | Sunburst | Treemap | Bubbles (Space Lens) | Category bars and lists |
| Free version | Scan, explore, reveal in Finder and review. No time limit. | Scan and browse. Can’t delete or show in Finder. | Everything | 7-day trial | — |
| Removing files | Moves to Trash after review | Deletes permanently, 5-second cancel | Optional, set in preferences, with optional confirmation | Part of a cleaning suite | Delete from some categories |
| Runs on | Apple silicon, macOS 11+ | Apple silicon and Intel, macOS 10.13+ | Apple silicon and Intel; current version needs macOS 14+ | macOS 11+ | macOS 13+ (earlier: About This Mac) |
Prices and features from each developer’s website on 28 October 2026. Something changed? Tell us at support@disktree.app. Scroll the table sideways to see every tool.
When another tool is the better pick. DaisyDisk covers up to five Macs, runs on Intel and can show hidden and purgeable space. GrandPerspective is free and open source. CleanMyMac does far more than disk maps, if you want an all-in-one cleaner.
Explore free. Pay once to clean up.
No subscription. No account. Use it every time your Mac fills up.
Explore
Free
Everything except in-app cleanup, for as long as you like.
- Scan any folder or drive
- See files and folders drawn to scale
- Real names, sizes, file counts and dates
- Reveal anything in Finder
- Mark items and build a review list
For Apple silicon Macs, macOS 11 or later.
Clean up One-time purchase
$14.99 once
Move reviewed items to the Trash from inside DiskTree.
- Everything in Explore
- Activate on 2 Macs, for personal or work
- All version 1.x updates included
- Works offline once activated on each Mac
- 30-day money-back guarantee
- Pay in Paddle’s secure checkout, right on this page.
- Your key appears on screen and arrives by email.
- Paste it into DiskTree to unlock Move to Trash.
Every detail at a glance
- What it is
- A disk space analyzer for Mac that shows files and folders as a treemap
- Price
- Free to scan and explore. $14.99 one-time to unlock Move to Trash.
- Licence
- 2 Macs, same person, personal or professional use. v1.x updates included. No expiry.
- Requires
- Apple silicon Mac, macOS 11 Big Sur or later. Tested on macOS 26 Tahoe. Intel Macs aren’t supported.
- Download
- 5.7 MB ZIP, Developer ID signed, notarized by Apple
- Current version
- 1.0.0, released 22 October 2026. Changelog
- Privacy
- Scans run on your Mac. No account, no app analytics. Your scan isn’t sent to DiskTree’s services.
- Refunds
- 30-day money-back guarantee on direct purchases
- Made by
- Muhammad Mohsin Rafi, an independent developer. Built on the open-source tobi/disktree (MIT). Not endorsed by its author.
Questions.
DiskTree is made by one independent developer, Muhammad Mohsin Rafi. Questions, bugs and refund requests go straight to the maker at support@disktree.app.
The basics
Is DiskTree free?
Yes, to scan and explore, with no time limit or scan limits. You can see real file names and sizes, reveal items in Finder and build a review list for free. Moving items to the Trash from inside DiskTree is a one-time $14.99 purchase for two Macs.
Does it work on my Mac?
DiskTree 1.0 runs on Mac computers with Apple silicon (M1 or later) and macOS 11 Big Sur or later. It’s tested on macOS 26 Tahoe. It doesn’t run on Intel Macs.
Why not just use Storage settings?
Storage settings shows totals by category, like Documents or System Data, but not which folders inside are responsible, and some categories can’t be opened at all. DiskTree shows the actual folders and files you can access, nested and to scale. Snapshots and purgeable space aren’t ordinary folders, so they don’t appear in the map.
Why don’t DiskTree’s numbers match Finder?
DiskTree normally shows allocated size, the space a file occupies on disk; apparent size is a separate view. It counts in binary units (1 GiB is 1,024³ bytes), while Finder counts in decimal gigabytes, so the same folder looks about 7% smaller in DiskTree. Finder may also count purgeable space as available, and APFS clones and snapshots share space between files. How storage numbers work
What about external drives and cloud folders?
You can scan mounted drives. DiskTree avoids opening folders it recognises as cloud-only, but behaviour by cloud provider is still being checked, and a skipped folder may still use remote storage. Moving items to the Trash depends on the drive, and network drives aren’t promised to work in 1.0.
How is DiskTree different from DaisyDisk?
Both show your disk visually. DaisyDisk uses a sunburst, costs $9.99 for up to five Macs, runs on Intel too, and deletes files permanently after a 5-second chance to cancel. DiskTree uses a colour-coded treemap, lets you explore and reveal in Finder for free, and only ever moves items to the Trash. Full comparison
Safety and privacy
Will DiskTree delete anything on its own?
No. Scanning and marking never move anything. You review your list and confirm before items go to the macOS Trash. DiskTree has no permanent-delete option and never empties your Trash.
Does DiskTree upload my files or file names?
No. Scans run on your Mac, and DiskTree has no app analytics. Buying and activating use Paddle and DiskTree’s licence service, which don’t receive your scan, file names, paths or sizes. Network drives and cloud storage providers can have their own network behaviour. Privacy policy
Do I need to give it Full Disk Access?
No. Start with any folder you can already open; macOS may ask about Desktop, Documents or Downloads. Full Disk Access is optional and lets DiskTree see more protected locations. Without it, protected folders are skipped and listed as unreadable.
Buying and licence
What happens after I buy?
Checkout opens right on this page. Once you’ve paid, your purchase key appears on screen and arrives by email. Paste it into DiskTree to unlock Move to Trash. Activation needs a connection once on each Mac; after that it works offline. If you lose the key or replace a Mac, use key recovery and transfer. Key recovery and transfer
Is there a subscription or a trial?
No subscription. Instead of a timed trial, the free version keeps everything except in-app cleanup, for as long as you like.
Can I get a refund?
Yes. Direct purchases have a 30-day money-back guarantee. Email support@disktree.app with your order reference. Refund policy
Do I get updates?
All 1.x updates are included. You download them manually from this site. A future 2.0 may be a paid upgrade, and your 1.x licence doesn’t end if you don’t upgrade. Changelog
Who makes DiskTree?
Muhammad Mohsin Rafi, an independent developer. DiskTree is built on the open-source tobi/disktree project (MIT licence), with its own Mac experience and cleanup review. The upstream author doesn’t endorse or support this app. It is also a different app from other projects that share the DiskTree name.
Start with a free scan.
See where your space went before you decide anything. Nothing moves until you say so.
For Mac computers with Apple silicon, macOS 11 or later.