A Mac Cleaner That Explains Before It Deletes

A good Mac cleaner tells you what it found, explains what each item is, and lets you undo what it removes. SystemWatch works that way. It scans your storage, describes every item in plain language, moves what you choose to the Trash, and keeps a Cleanup History so you can put things back. Nothing is removed without your confirmation.

What a Mac cleaner should do

• Show its work. You should see each item, its size and where it is, not just a total.
• Explain each item. "Spotify's cache, rebuilt automatically" is useful. "Junk" isn't.
• Use the Trash. Moving files to the Trash first means a mistake costs you nothing.
• Offer undo. You should be able to put back anything it removed.
• Ask first. Nothing should be deleted in the background.

What it shouldn't do

• Count "issues" to worry you. Caches and logs are a normal part of a working Mac. Having lots of them isn't a problem.
• Promise speed. Removing caches frees space. It doesn't make a Mac faster, and apps run slower until they rebuild.
• "Free up memory." macOS manages memory well. Forcing it to drop cached data means it reads that data back from disk.
• Touch system files. macOS protects them for good reason.

You can do much of this by hand. Our guides to clearing System Data and clearing caches show how. A cleaner saves time by finding everything in one pass and telling you what it is.

How SystemWatch cleans

A storage scan that explains

The scan sorts what it finds into app caches, logs and crash reports, developer files, iPhone and iPad backups, leftovers from deleted apps, old installers in Downloads, Mail attachments and large files. Each item shows its size, where it is, what it's for and what happens if you remove it.

Items also get a safety level:

• Safe: rebuilds on its own, like most caches.
• Review: might matter to you, like old backups, simulators, archives and big files. You decide.
• Keep: shown so you understand the space, never offered for removal. Sandboxed app data is in this group.

Everything goes to the Trash, with undo

When you clean, items move to the Trash. Cleanup History lists each cleanup, and you can put items back from there.

Developer junk

If you write code, the scan picks up Xcode build data, package manager caches and simulators. The website edition adds Deep Clean, which uses Full Disk Access and runs each tool's own cleanup for Homebrew, old simulators, Docker, and npm, pnpm, Yarn and pip. It also removes Time Machine local snapshots and empties the Trash. These steps can't go through the Trash, so each one says exactly what it removes and asks before it runs.

An app uninstaller that finds leftovers

Dragging an app to the Trash leaves its settings, caches and support files behind. The website edition's uninstaller finds those related items and moves the app and its leftovers to the Trash together. You can put them back from Cleanup History. Leftover launch agents from apps you already deleted show up in the Startup Items view.

AI explanations, if you want them

You can ask Bob, SystemWatch's AI assistant, about any item. In the App Store edition this is part of SystemWatch Pro. In the website edition you use your own key from a provider such as OpenAI, Anthropic, Google Gemini or OpenRouter, or a local model in Ollama or LM Studio, and requests go straight from your Mac to that provider.

Editions and pricing

• App Store edition. The Storage scan is free. SystemWatch Pro adds one-click cleanup with undo, AI explanations and Bob, for $49.99 a year or $5.99 a month, each with a 3-day free trial.
• Website edition. A one-time $5.99 lifetime license (launch price for the first 100 copies, then $14.99) for up to 3 Macs. It includes cleanup with undo, Deep Clean, the app uninstaller and AI with your own key.

Both editions need macOS 15 or later and run on Apple silicon and Intel Macs. Scanning happens on your Mac.