DiskfernDeveloper ToolingReview build storage
Xcode & Developer Storage
Locate DerivedData, simulator runtimes, download caches and node_modules folders, then check which projects still need them.
Diskfern · Mac storage, made clear
How to check storage on Mac - and free up space fast.
See what’s using your Mac storage, find extra storage space, and clear what you don’t need with one visual map.
Free to scan foreverNo accountNo credit card
macOS 14+Apple silicon & IntelDownload coming soon
Find the big files. Keep what matters.Analysis stays on your Mac
Measured, not guessed
Real folders. Real results.
A whole startup disk in about 16 seconds, search across millions of files in milliseconds, and a saved map that’s back almost instantly.
- ~16 s
- Whole startup disk
- About 2.9 million files scanned
- 2.35 ms
- Selective Finder search
- videos > 1gb · 2 million records
- 184 ms
- Search index built
- For 2 million records
- 0.74 ms
- Treemap layout
- 3,000 tiles · layout calculation only
- 18.6 ms
- Saved scan restored
- 500,000 items
- 2,888
- Measurements taken
- Across 330 tests
Measured on a MacBook Air with an Apple M4 chip and 16 GB memory, running macOS 26.6. Results vary with your Mac, its storage and how many files you have.
See Diskfern in action
See why your Mac is full - in 49 seconds.
See how Diskfern helps you find what’s taking space, understand what you’re looking at, and clean with confidence.
- ~2.9M files scanned
- Natural-language file search
- Analysis stays on your Mac
Scan and search figures measured with an optimized build on a MacBook Air (M4, 16 GB). See the method →
Real-world workflows
Built for the storage that actually clutters your Mac.
Find the folders behind your storage use, understand their purpose, and review your options.
Creative WorkflowsFind large media
Video & Media Scratch Disks
Uncover multi-gigabyte ProRes render files, Final Cut event caches, and forgotten screen captures taking up valuable SSD space.
macOS System DataUnderstand app data
Caches & Staged Archives
Inspect readable caches and app data with file details and review prompts. A scan can differ from Apple's storage categories.
What you get back
More room. Less guesswork.
From a full disk to a clear plan for what to keep, review and clear.
Find the space you can actually reclaim
Spot large downloads, installers and forgotten projects in a map sized to their real disk usage.
Spend less time sorting through folders
Smart Highlights group 44 kinds of clutter. Safety labels help you separate rebuildable caches from files worth reviewing.
Keep control of every cleanup
Pro lets you collect candidates, review the total and move approved items to Trash. Restore them before you empty it.
Start with a free storage scan
Explore your own disk first. Upgrade only when you want cleanup tools.
The map shows where. Highlights say what.
Explore your storage map, with Smart Highlights to help you review caches, developer files and other cleanup candidates.
Smart Highlights
Example scan- Android SDK & Emulators21.4 GBReview
- Node.js9.8 GBSafe
- Xcode7.1 GBSafe
- Browser Caches4.6 GBSafe
- Installers & Disk Images3.2 GBReview
- Logs & Reports1.3 GBSafe
Labelled honestly. Safe items are rebuilt or downloaded again; Review items might be yours.
Recognises 44 kinds of clutter, including
- Node.js
- Xcode
- Simulators
- Build Output
- Gradle
- Android SDK & Emulators
- Pods & Packages
- Python Caches
- Rust & Go
- Docker
- AI Models
- Editors & IDEs
- Browser Caches
- App Caches
- Logs & Reports
- Trash
- Videos
- Large Photos & RAW
- Screenshots
- Meeting Recordings
- Downloads
- Installers & Disk Images
- Archives
- iPhone & iPad Backups
- Virtual Machines
- Old Large Files
- Messages Attachments
How it works.
Four steps, and nothing is removed until the last one.
01
Start a scan.
Open Diskfern and press Scan Now for the whole Mac, or Choose Folder to look at just one.
02
Watch it count.
A live counter shows items found, speed and the folder being read. Cancel any time.
03
Explore before it ends.
The map fills in while the scan runs, so you can start looking straight away. Your last scan reopens in seconds next time.
04
Clean up, safely.
Collect what you want gone in the Collector, see the space you'll get back, then move it all to the Trash in one step. Put Back still works.
Three views. One map.
Switch any time. Your place and selection come with you.
Your Home folder as a treemap: Library, projects and caches, each drawn to scale.
Smart Highlights
Tick a category. Review what's yours.
Highlights group the clutter by what it is. Safe categories go straight to the Collector; anything that might be personal is shown to you first.
Filters
Ask the whole disk one question.
Filters work across every scanned item, not just the folder on screen, and the map updates as you change them.
Inspect
Know exactly what it is before you decide.
Everything about an item is a right-click or a keystroke away, the way Mac apps should work.
Search
Find any file by name, in an instant.
Press ⌘F and type. Results stream in with sizes, filtered by kind and scoped to the whole Mac or one folder.
Disk Advisor
Not sure what a folder is? Ask.
Disk Advisor answers from your scan, in plain language, on your Mac. It explains and suggests; you decide.
Every app, with its real size.
See all your apps, including the ones outside the Applications folder, sorted by the space they take. Uninstall the ones you don't use; they go to the Trash.
Built to be trusted with your files.
A cleaner touches the things you care about. Diskfern is designed so nothing happens without you seeing it first.
Trash, not erase.
Standard cleanup moves approved items to the Trash. Review them before emptying it; Trash is not a backup.
Your files stay on your Mac.
No account needed and no upload. Optional crash reports never include file names, paths or license keys.
Protected stays protected.
System and SIP-protected locations are never offered for removal.
Advice that knows your disk.
On supported Macs, Disk Advisor explains scan facts and can stage items for review. Removal still needs your confirmation.
For developers
Knows where your toolchains hide space.
Build output, simulators, emulator images, package caches and local models show up by name, with the real path, instead of one vague System Data bar.
- Xcode
- iOS Simulators
- Android Studio
- Gradle
- Node.js
- CocoaPods & packages
- Python
- Rust & Go
- Maven & Composer
- Docker
- Local AI models
- Editors & IDEs
Guides for a lighter Mac.
System Data & macOS
Deleted Files but Mac Storage Is Still Full? Here’s Where the Space Went
Understand the storage readout before deleting anything else.
Read the guide ›Developer storage
uv Cache Taking Up Space on Mac? What It Is and How to Clean It Safely
Learn what creates ~/.cache/uv, why uvx makes it grow, and how to safely reclaim space.
Read the guide ›Developer storage
Hugging Face Cache on Mac: Find Models, Revisions and Safely Free Space
Find model caches and preview the cleanup with Hugging Face’s own tools.
Read the guide ›Seeing is free. Cleaning is Pro.
No subscription. Map your own disk first, then decide.
Free
Find out what is taking space
$0forever
Free forever · Start with your own disk
A complete view of your storage before you pay anything.
- Unlimited read-only disk scans
- Treemap, list and sunburst views
- Diskfern Finder: natural search ("videos > 1gb", "pdf this month")
- 44 Smart Highlights with one-click highlight
No payment required to join
Pro Lifetime
Turn storage insights into cleanup
Available at launch
One-time purchase · No recurring bill
Review and clear clutter in one workflow, without a subscription.
- Everything in Free
- Disk Advisor AI (macOS 26 + Apple Intelligence)
- Collector with cleanup totals & batch review
- One-click Stage Safe for rebuildable clutter
No payment required to join
Family Lifetime
The full Pro toolkit for your household
Available at launch
One-time purchase · Up to 5 household Macs
Shared across up to five household Macs with one payment.
- Every Pro cleanup feature & Disk Advisor AI
- Up to 5 Macs in one household
- Collector and Stage Safe on each Mac
- App uninstaller & Disk Advisor AI on each Mac
No payment required to join
Prices in USD. Compare plans ›
Questions, answered.
Is Diskfern safe to use?
Scanning only reads your disk. Cleanup is a separate step: you collect items, review them, and Diskfern moves them to the Trash by default. System-protected items are never offered for removal.
Does anything leave my Mac?
Your files and storage analysis don't. File names, paths and sizes are analysed on your Mac, and Disk Advisor uses Apple's on-device model. If Diskfern crashes, it can send a limited technical crash report (app version, macOS version, Mac model and the error) to Sentry, our crash-reporting provider. Reports never include file names, paths, file contents, searches or license keys, and you can turn them off in Settings › Privacy. Activating a paid license and checking for updates also contact our servers; the Privacy Policy lists exactly what they send.
Why does it ask for Full Disk Access?
Full Disk Access lets Diskfern read more protected folders, including some app data. Permissions, unavailable locations and filesystem accounting can still limit a scan. Diskfern never bypasses macOS protections.
Which Macs does it run on?
Any Mac with macOS 14 Sonoma or later, Apple silicon or Intel. Disk Advisor's answers need macOS 26 with Apple Intelligence; everything else works on every supported version.
What's free and what's Pro?
Scanning, the treemap, list and sunburst, search, filters, Smart Highlights and Quick Look are free forever. Collector cleanup, one-click Stage Safe, the app uninstaller and Disk Advisor are Pro.
Is it a subscription?
No. Pro and Family are one-time purchases, and you can ask for a refund within 30 days.
Get your space back. Start with a free scan.
Explore the files and folders Diskfern can read. Your files stay on your Mac, and nothing is removed until you say so.
macOS 14 Sonoma or later · Apple silicon and Intel