SystemZen Advanced —
the whole disk, not just a corner of it
The Mac App Store version runs in Apple’s sandbox, which means it can only read folders you hand it one at a time. Advanced asks for Full Disk Access instead and scans your Mac the way a maintenance app is supposed to. Same app, same subscription — the only difference is what macOS lets it touch.
Version 1.0.9 · macOS 13 or later · Apple silicon and Intel
Which one do I want?
The honest comparison
Most people should take the App Store version. Choose Advanced if it told you “Nothing found” on a Mac you know is full, or if you want it to reach system caches and other users’ leftovers.
| App Store | Advanced | |
|---|---|---|
| How you get it | Mac App Store | Downloaded here |
| Updates | Automatic | You download the new version |
| What it can read | Folders you pick in a chooser | Everything Full Disk Access allows |
| System caches and logs | No — the sandbox refuses | Yes |
| Buying Pro | In the app | On this website |
| Pro bought on another device | Works in both — sign in and it follows you | |
Installing
Three steps, and the third one matters
Open the download
Drag SystemZen Advanced into your Applications folder. It is notarized by Apple, so it opens normally — no right-click, no warning to click past.
Grant Full Disk Access
The app shows you the switch and opens System Settings at the right page. Without it, Advanced sees no more than the App Store version does.
Quit and open it again
macOS only applies Full Disk Access to an app that has restarted. Skip this and it will still report almost nothing — this is the step people miss.
Verify it yourself
What you are running
Signed by Fenul LLC (team A5SQ29M7WW) and notarized by Apple, which means Apple scanned this exact file for malware and issued it a ticket. macOS checks that ticket on first launch even with no internet connection.
SHA-25655b5539506140a0b3b42968611433c501bbdd30e0a072f842649c59952680a55
To check it before opening: shasum -a 256 ~/Downloads/SystemZen-Advanced-1.0.9.dmg
Pro
One subscription, every device
Advanced is free to download, and the free tier does the same work here as everywhere else. Pro for this version is bought here on the website. Buy it once and sign in on your Mac, iPhone, Android or PC — it is the same subscription.