System Data isn't one folder you can delete, it's a pile of caches, logs, snapshots and backups. SpaceWise shows which piles are big and which are safe to remove, so you free space without touching what macOS needs.
7-day free trial · 30-day refund · then $12.99 once · uploads nothing
No registry tweaks, no "PC booster" tricks. Just clear, honest space recovery.
Quick wins macOS handles itself.
Finder > Go > Go to Folder > ~/Library/Caches. Sort by size (Cmd+J > Calculate all sizes) and delete the contents of big folders - not the folders themselves.
System Settings > General > Storage > Manage > Backups.
Eject mounted .dmg disk images and delete the installers in Downloads.
One scan, every cache and backup sorted by size and labeled.
SpaceWise labels all of this for you.
| What it is | Typical size | Safe? |
|---|---|---|
| App caches (~/Library/Caches) | 1 to 20 GB | Safe apps rebuild them; a big part of System Data |
| App logs (~/Library/Logs) | 0.1 to 2 GB | Safe old log files |
| Xcode build data (DerivedData) | 2 to 30 GB | Safe rebuilt on the next build |
| Xcode device support files | 1 to 15 GB | Check first re-created when you plug the device in |
| iPhone / iPad backups | 5 to 100 GB | Check first make sure you don't need them |
| Old Downloads, disk images (.dmg) | varies | Check first these are your files |
| System, Applications, Keychains, iCloud Drive | - | Never SpaceWise blocks these |
Analyzers show a chart and leave you guessing. SpaceWise tells you what's safe, what to check, and what to leave alone.
A dedicated Hidden files view lists the biggest hidden folders, the ones your file manager never shows you.
Understands Gradle, npm, Xcode, emulators, AI model caches and more, the stuff that quietly eats 50+ GB.
No account, no cloud, no tracking inside the app. It runs locally and only touches paths it showed you.
Nothing is deleted for good. You can restore anything from the Trash.
No fake "5,000 errors found", no registry cleaning, no "boost your PC" pop-ups.
Try everything free for 7 days. Scanning stays free forever.
Secure checkout by Dodo Payments. Taxes shown at checkout. Questions? fuidzy@outlook.com
Start the free trial first, buy only if it helps.
New Mac release. Nothing to install: Python is bundled inside the app. Works on Apple-silicon and Intel Macs. Try it free for 7 days; if anything doesn't work on your Mac, email fuidzy@outlook.com and we'll fix it or refund you (30 days).
SpaceWise.app → Open → Open. macOS asks only the first time, because the app is new and not notarized yet. (If it refuses: System Settings → Privacy & Security → Open Anyway.)How you get your license: after you buy, your code arrives by email within a minute or two (check spam). Open SpaceWise, click Enter license code, paste it, done.
Empty the Trash, restart, delete old device backups and clear large app caches. SpaceWise finds the largest ones and moves them to the Trash.
Cache contents are rebuilt by apps, so it is generally safe, but delete the contents and not the folder itself, and quit the app first. SpaceWise labels these as Safe.
No. Part of System Data is needed by macOS. Only clear the caches, logs and backups you recognize.
It runs only on your computer and uploads nothing. It only moves items to the Trash, only touches paths it showed you, and blocks system and personal folders.
The first 7 days are free with everything unlocked. After that scanning stays free and cleaning needs a license: $12.99 once, works on 2 devices, 30-day refund. Your license code is emailed to you right after you buy.
It is emailed to the address you used at checkout, usually within a minute or two. Check spam. Then open SpaceWise, click Enter license code and paste it. Still nothing? Email fuidzy@outlook.com.
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