Blocks, not a list
Every block is a folder and its size is the space it takes. Click to inspect, double-click to open. Blocks inside blocks, down to the file.
See what fills your Mac.
A map of your disk. Every block is a folder; the bigger the block, the more space it takes. Clean the safe parts in one click.
macOS 14 or later · Works offline · Open source (MIT)
The app. Click a block to see what is inside and what can be cleaned.
Split up like in Settings
macOS, System Data, apps, documents and developer data are shown separately, so the mystery gigabytes have a place.
One click, only the safe part
Removes what apps rebuild on their own: caches, logs, build leftovers.
Trash first
Anything not clearly safe goes to the Trash.
Or pick it yourself
Select a block, see what can go. Items are marked Safe, Review or Protected, and striped on the map before you confirm.
Where the gigabytes hide
Xcode DerivedData and simulators, npm, Gradle and Cargo caches, Hugging Face models, Docker.
Nothing leaves your Mac
No accounts, no analytics, no tracking. File names and sizes stay on the machine.
How it works
- Allow accessChoose your Home folder once. You decide what the app can see.
- ScanThe map builds itself. Play Tetris while a big disk is scanned.
- CleanPress Auto clean, or select items yourself and confirm.
Two editions
Mac App Store
App Store edition
Free to download. Cleaning unlocks with $4.99 / month or $19.99 once (prices vary by region).
- Runs in Apple's App Sandbox
- You pick your Home folder once
- Updates through the App Store
Open source · MIT
Open-source edition
Free. Signed and notarized builds on GitHub.
- No purchases, no sandbox
- Full Disk Access for the fullest scan
- Read, build and change the code
Guides
- What is System Data on Mac, and why is it so big?What the grey bar in Storage settings contains, why it grows and why its size jumps around.
- How to clear System Data on Mac safelyStep-by-step, from safest to most effort, with the Terminal commands and the things you should not delete.
- How See Your Disk cleans: methods and safety levelsA transparent explanation: rules instead of guesses, three safety levels and what is never touched.
Questions
Is it safe to use?
Yes. Nothing is removed without your confirmation. Auto clean touches only data that apps recreate themselves, such as caches and logs. Everything else is marked Review and goes to the Trash, and system files are protected.
What does Auto clean remove?
Per-app caches in your Library, logs, Xcode build leftovers and device support files, the simulator cache, npm and similar package caches, and old downloaded update packages. You can always see the exact list first.
Why does the app ask me to choose my Home folder?
Apps from the Mac App Store run in a sandbox, and macOS lets them see only the folders you pick. Choose your Home folder once; the permission is remembered and you can change it later.
Does it send my data anywhere?
No. The app reads file names and sizes on your Mac and never uploads them. There are no accounts, analytics or ads. Purchases are handled by Apple.
What is System Data, and why do the numbers differ from macOS Settings?
System Data is space macOS cannot attribute to a category: caches, logs, snapshots, indexes and more. Settings also counts things apps cannot see, such as APFS snapshots and purgeable space, so the figures will not match exactly. The app shows what it can trace to folders and keeps the rest as a separate block.
Which Macs does it support?
macOS 14 Sonoma or later.
Is it really open source?
Yes, under the MIT license. The open-source edition has no purchases and uses Full Disk Access for a complete scan. Find it on GitHub, and contributors are welcome.
How do I get help or report a bug?
Write to [email protected] or open an issue on GitHub.