One ring, three levels deep
The chart shows the folder you are in and two levels beneath it at the same time. A wedge's size is its share of the space, so whatever filled the disk is the first thing you look at.
Free · macOS · no account
See what filledyour disk.
Sunflower is a free disk space analyzer for macOS. It draws your Mac's storage as one ring: the folder you are looking at and two levels beneath it, biggest first. The caches nobody empties and the leftovers from apps you deleted years ago turn up in the same picture.
Version 1.1 · What's new · macOS 15 or later, Apple Silicon · notarized by Apple
The film
Where did 80 GB go?
Fifty seconds on the space your Mac will not explain, and the app that does. Sound on.
In the film: the System Data number macOS shows without explaining, a scan of the startup disk, the ring that comes out of it, and the screen that names what that number was made of. Read what System Data is if you would rather have it in writing.
What it does
A picture of your disk that answers the question you opened it with.
Which folder got big, and what is inside it. Every feature below gets you from the first answer to the second faster.
Click straight through it
Clicking a wedge opens its details: the full path, and what is inside it sorted largest first. Click a folder in that list and the ring goes there.
System Data, itemised
macOS reports one opaque number and leaves you to guess. Sunflower splits it into caches, backups, derived data and the rest, and says what each one is before you touch it.
What System Data isApps and what they left behind
Sunflower sizes every installed app by its bundle plus the support folders, containers and caches it scattered around the disk. Uninstalling takes all of it.
Six ways to read one scan
Rings for browsing, a treemap for comparing, a list that folds nothing away. Then three questions to ask of any folder: what is largest, what kind of thing the bytes are, and what has not changed in years. Switch in the top bar.
Every disk you have mounted
External drives appear next to the startup disk, each with how full it is, and you pick the one that is filling up.
How it works
Scan once, then follow the space.
Start with the whole disk
The ring fills with what is on the disk, and a thin arc outside it shows how full the disk is. Free space used to take most of the circle and bury the folders you came to look at, so it now lives at the edge, where one number belongs.
Largest first, the way the details panel lists a folder.
Open the one that grew
Selecting a folder slides the ring so that folder sits in the middle of what you can see, and the panel names it, sizes it and lists what is inside. Click a folder in that list to go there.
4,849 files live only in iCloud. They take no space here, and Sunflower left them there rather than downloading them to weigh them.928.5 MB here is the same data as another file on disk, so Sunflower counts it once.Deal with what you found
Remove an app together with everything it left scattered around the disk. Or clear its caches and keep the app, the right move for something you still use.
Bundle 12,1 GB · leftovers 11,3 GB, mostly DerivedData
Clear 11,3 GB of caches and leave Xcode installed. It rebuilds what it needs the next time you open it.
What it will not do
You are handing it your whole disk.
These four rules are built in. No setting turns any of them off.
Reads nothing until you ask
Opening Sunflower reads a disk name and a capacity, and stops there. The walk begins when you press the button, and you can stop it partway and keep what it found.
Names everything before it goes
Every removal passes through one sheet that lists what is going and what it frees. Items go to the Trash, so a change of mind costs nothing.
macOS is off limits
Sunflower will not delete system paths. You can look at every byte of them, and there is no setting that changes what it will do with them.
iCloud files stay in iCloud
A file that lives only in the cloud takes no space on your Mac. Sunflower counts it as zero and leaves it there rather than downloading it to weigh it.
Price
Free.
There is no licence to buy and no account to make. Sunflower does one job on one platform, and it costs nothing.
Version 1.1 · What's new · 2.2 MB disk image · SHA-25607464d99fc00d8a3bed7e24940c82b42207a901ee345730f9d49f74c1668e2d6