Safe
The app recreates it on its own and you would not notice. Preselected in the review list.
Slack cache
~/Library/Application Support/Slack/Cache
Mac storage analyzer and cleaner
Know what's safe to delete.
See what fills your Mac, learn what each thing is, and clear only what your apps can rebuild. From Xcode and Docker to Ollama, Final Cut and Blender. Every rule is labelled, and everything goes to the Trash first.
Everything goes to Trash first
Undo anything
Nothing leaves your Mac
Review before cleaning
Flutter build foldersRebuildsprojects idle 90+ days
21.1 GBDocker: unused imagesRebuildspull or rebuild to restore
12.2 GBStremio streaming cacheSafecomes back on its own
6.0 GBAndroid emulatorsReviewmay hold your own data
11.7 GB12.2 GBFreed immediately
27.1 GBAfter emptying Trash
Interface preview. Sizes are from a real developer MacBook, rounded.
01
Find
A size-sorted analyzer with a treemap. Drill into any folder, sort by size, name, date or item count, and see what is really using space.
02
Know
A catalog of known cache and build-output rules explains what each item is, whether it comes back, and what it costs to rebuild.
03
Undo
Removed items go to the Trash first. Every removal is logged, so you can restore one item or a whole cleanup.
The catalog
Every item says what happens if you delete it.
Most cleaners give you a total. StorageSage gives you a reason. Each rule carries one of three labels, and anything that could hold your own files is never preselected.
Rebuilds
It comes back, but costs a re-download or a rebuild. Never preselected, except old build folders in projects you haven't touched.
node_modules in an idle project
restored by npm, pnpm or yarn install
Review
May contain data you created or cannot easily recreate. Never preselected — you decide item by item, and it still goes to the Trash first.
Android emulators
~/.android/avd/*.avd
300+tools and apps covered
600+path rules
130+project folder patterns
100+tools officially supported
Supported
At least one rule is verified on a real Mac or backed by vendor documentation.
Community
Based on community reports. Works for many people. Confirm before relying on it.
Unverified
Best effort, not yet checked against a source. Never preselected as Safe.
Built for how you work
The tools you actually use, not a generic junk list.
Xcode DerivedData Safe
~/Library/Developer/Xcode/DerivedData
Build products and indexes. The next build is a full rebuild.
Gradle caches Rebuilds
~/.gradle/caches
Dependencies re-download, so the next Android build is slower.
Old project build folders Rebuilds
node_modules, build, target, Pods, .venv
Found next to package.json, pubspec.yaml, Cargo.toml and friends, with idle time shown.
Docker and OrbStack Safe Rebuilds Review
dangling images, build cache, unused images, orphaned volumes
Read live from Docker. Compose projects whose folder is gone are flagged as orphaned.
iOS Simulator devices Review
~/Library/Developer/CoreSimulator/Devices
Holds installed apps and their data, so you choose which to remove.
Language ecosystems Rebuilds
npm, pnpm, cargo, go, pip, uv, conda, Maven
Package caches and old toolchains, with the official clean command shown where one exists.
Ollama models Rebuilds
~/.ollama/models
Re-pull with ollama pull. Hours of download, so never preselected.
Hugging Face cache Rebuilds
~/.cache/huggingface/hub
Models and datasets you downloaded. Login tokens are never included.
ComfyUI models Review
~/ComfyUI-Shared
Checkpoints you may have collected by hand, so it is a Review item.
Claude desktop caches Safe
~/Library/Application Support/Claude/Cache
Browser-engine caches. The large Cowork VM disk is a separate Review item.
MCP server caches Rebuilds
~/.npm/_npx
Packages fetched by npx for MCP servers. They download again on next use.
Editors and agents
Cursor, Zed, Antigravity, Windsurf and more
Electron caches and language-server downloads. Conversation history and agent memory are never touched.
Rules for Claude Code, Cursor and similar agents deliberately skip transcripts, memory, settings, skills and credentials.
Final Cut Pro Rebuilds
~/Movies/*.fcpbundle/*/Render Files
Render, optimized, proxy and analysis files. Regenerated from originals, which must stay.
Premiere and After Effects Rebuilds
~/Library/Application Support/Adobe/Common/Media Cache Files
Conformed audio and peak files, rebuilt when clips are reimported.
DaVinci Resolve Rebuilds
~/Movies/CacheClip
Render cache and optimized media. The project library is never touched.
Lightroom Classic Rebuilds Review
*Previews.lrdata
Standard previews rebuild. Smart Previews can be your only editable copy, so they stay Review.
Blender and Unity Rebuilds
~/Library/Caches/Blender, project Library/
Caches and imported-asset folders, found next to your projects.
Logic Pro and Ableton Rebuilds
~/Library/Caches/com.apple.logic10
App caches and crash logs. Projects, stems, samples and packs are never suggested for removal.
Slack, Discord, Teams Safe
~/Library/Application Support/Slack/Cache
Chat apps keep large web caches. Messages live on the server.
Browsers Rebuilds
Chrome, Safari, Firefox, Arc, Zen, Edge, Brave
Web caches and downloaded on-device models. Passwords, history and cookies are never touched.
Spotify offline downloads Review
~/Library/Application Support/Spotify/PersistentCache
The streaming cache is separate. Offline songs are yours to keep or drop.
iPhone and iPad backups Review
~/Library/Application Support/MobileSync/Backup
Often the largest single item. Listed, never preselected.
Steam Rebuilds Review
~/Library/Application Support/Steam/steamapps
Shader cache and partial downloads rebuild. Installed games are Review.
Office and writing apps
Microsoft 365, Zoom, Obsidian, Zotero, LaTeX
Caches and auxiliary files. AutoRecovery files, vaults and libraries are treated as your data.
Safety, in detail
Cautious by default, and honest about numbers.
- Free now vs after emptying the TrashThe review sheet shows both. Moving something to the Trash doesn't free space until you empty it, and we say so instead of inflating the total.
- Undo historyRestore a single item or a whole cleanup. Items can also be put back from the Trash with Put Back.
- Everything goes to the Trash firstNothing is deleted outright. Removed items sit in the Trash, so you can Put Back anything, and space is only reclaimed when you empty it.
- Running apps are flaggedIf an app is open, its items are marked "close first" and are never preselected. Auto-clean and the command line skip them. Close Slack or Xcode before you clean their caches.
- Nothing is auto-deleted by surpriseAuto-clean is off by default. When enabled it only touches Safe items and idle project folders, and custom rules stay out unless you opt in.
Smarter than delete
Also a command line, for scripts and for people who prefer one.
Everything in the app works from the terminal. Every destructive command is a dry run until you add --execute.
# what is big, and what could go $ storagesage scan ~ --depth 2 --top 10 $ storagesage suggest --persona developer --items # dry run first, then apply. Removed items go to the Trash $ storagesage clean --all-safe $ storagesage clean --all-safe --execute # Docker, unused images and build cache $ storagesage docker clean --all-safe # teach it about any app $ storagesage rules add --name "My App cache" \ --path "~/Library/Caches/com.example.app" --risk safe # change your mind $ storagesage history $ storagesage undo 0
Duplicates without data loss
Identical files are found by full hash, then replaced with APFS clones. Every path keeps working and the disk blocks are shared. Or move the extras to the Trash instead.
Stale project detection
Old node_modules, build and target folders are matched to their project, and idle time comes from your git history and manifests. Only projects you haven't touched for months are preselected.
Your own rules
Point a rule at the folders any app fills, choose a label and preview exactly what it matches. Or right-click a folder in the analyzer and turn it into a rule. Rules are plain JSON you can share.
Largest files at a glance
The Large Files view lists the biggest individual files on your disk, newest and largest first, so you can spot a forgotten video export or disk image and send it to the Trash in one click.
Questions
Straight answers.
Is it safe?
It is built to be cautious, not to be a guarantee. Every rule is labelled Safe, Rebuilds or Review. Nothing is removed without a review step, everything goes to the Trash first, every removal is logged for undo, and rules that could touch your own data are never preselected. Items rated Rebuilds cost time or bandwidth to restore. That is what the label means.
How is "space freed" measured?
Two numbers, both shown before you confirm: what is freed immediately (Docker removals, which can't go to the Trash) and what is freed after you empty the Trash. We don't add up things that come back on their own or that still sit in the Trash.
What if my app isn't covered?
Add a rule. In the app, right-click a folder in the analyzer and choose "Create Cleanup Rule from This", or use the rules page. From the terminal, use storagesage rules add. The preview shows exactly what it would match, and rules that point at credentials, your home folder or system folders are rejected.
What does it never touch?
SSH and GPG keys, cloud credentials, keychains, AI agent memory and history, agent settings, files that look like secrets, your home folder and personal folders as a whole, and system folders. This is enforced in code for built-in and custom rules.
Does it send anything anywhere?
No personal data. The only network request the app makes is an update check against storagesage.app: it compares your version to the latest and sends nothing about you or your files. You can turn it off in Settings. The command line tool makes no network requests, there is no analytics and there are no accounts. Everything else reads your disk and runs local tools such as git, tmutil and docker for read-only checks. This website sets no cookies and loads no third-party scripts.
Why does it ask for Full Disk Access?
macOS protects folders such as Safari, Mail and Photos data. Without access, StorageSage can't see them, so it will miss those caches. The app still works without it, and it tells you which folders it could not read.
Which Macs are supported?
macOS 14 (Sonoma) or later, including macOS 27. There are separate downloads for Apple Silicon (M1 and later) and Intel Macs (which top out at macOS 26); the page suggests the right one for your Mac, and you can pick either. macOS 13 and older are not supported.
Download
Download StorageSage.
The app and the command line tool, built for your Mac. Free to download, signed and notarized by Apple.
Apple Silicon is M1 and later; Intel is pre-2021 Macs. Not sure? Which do I need?
SHA-256 checksum for the selected download:
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- Open the .dmg and drag StorageSage.app to Applications.
- Launch it. The build is signed with a Developer ID and notarized by Apple, so it opens without a warning.
- Optional: grant Full Disk Access so protected folders such as Safari and Mail caches are included.
- On first launch the app offers to install the storagesage command so you can use it in any terminal. You can also do this anytime from Settings.