Disk map
See it all at once
An interactive sunburst shows every folder by size. Click a slice to dive in, back out to see the big picture.
Disk space analyzer for Mac
Your disk is full.
Spacedog knows why.
Spacedog sniffs out what's eating your storage, tells you in plain English what each thing is, and helps you clear the junk safely. Everything goes to the Trash first.
Coming soon to the Mac App StoreSee what it does
Free to use. Works on macOS 15 and later.
See it all at once
A map of everything
on your disk.
Every folder sized and coloured, biggest first. Click a slice to dig in, back out for the big picture.
Nothing deleted without asking. Everything goes to the Trash, so you can put it back.
Your files stay on your Mac. No account, no uploads, no tracking.
Cloud files left alone. iCloud and Drive files aren't downloaded just to be measured.
A nose for space hogs.
Plain English
Know what's safe to delete
Every folder gets an explanation and a label: safe to clear, review first, or use the app. No more guessing what “com.apple.something” is.
Leftovers
Find apps you already deleted
Uninstalled apps leave folders behind. Spacedog matches them against what's installed and flags the strays.
Duplicates
Sniff out copies
Finds byte-for-byte duplicate files, and knows when two copies already share space so it never promises space you won't get back.
Changes
What grew since last time?
Each scan is remembered, so you can see which folders ballooned this week instead of starting from scratch.
Menu bar
A gauge that watches for you
Free space at a glance in the menu bar, with an optional heads-up when you're running low.
Not just a chart.
An answer.
Most disk tools stop at "this folder is big". Spacedog tells you what it is and what to do about it.
- Safe to clearXcode build filesXcode rebuilds these next time you build.
- Review firstDownloadsOld installers and one-off files pile up here.
- Use the appPhotos libraryManage it in Photos, not by deleting files.
Free. Seriously.
Pay once if you want the extra tricks. No subscription.
Free
- Scan any folder, your home, or the whole disk
- Interactive disk map and largest files
- Plain-English explanations for every folder
- Move anything to the Trash, safely
- Menu bar gauge and low-space alert
Pro one-time unlock
- Everything in Free
- Duplicate finder
- Changes: what grew since your last scan
- One-click Smart Cleanup
- Unlimited Cleanup Basket and scan exclusions
Questions
Why does it ask for access to my disk?
Mac App Store apps can only read folders you choose. Pick “Macintosh HD” once and Spacedog remembers it, so you won't be asked again.
Can it delete something important?
Spacedog never deletes anything on its own. You choose what to remove, it asks you to confirm, and it moves items to the Trash, where you can restore them until you empty it.
Why are some folders marked as unreadable?
macOS protects a few folders such as Mail and Messages. Give Spacedog Full Disk Access in System Settings → Privacy & Security to include them.
Does it upload my files or track me?
No. Scanning happens entirely on your Mac and the app collects no data. See the privacy policy.