How to Tell if a Mac Cleaner Can Be Trusted

You can judge any Mac cleaner with four questions: what exactly does it delete, do deleted items go to the Trash so you can get them back, what does it send off your Mac, and how does it charge. The answers matter because a cleaner asks to read your whole disk. Here is how to check each one yourself, on macOS 13 and later.

1. Check what it deletes

A cleaner should tell you what it is about to remove before it removes it.

1. Run a scan and stop before cleaning anything.
2. Open each category in the results. You should be able to see the folders or files behind the total, not only a number.
3. Pick two or three items and find them in Finder with Go > Go to Folder. Check that they are what the app says they are.
4. See whether you can untick single items, or only accept the whole list.

Look at how the categories are sorted as well. Caches and logs are made again by the apps that own them. Documents, downloads and device backups are not. A careful cleaner keeps those apart and asks you to review the second kind.

2. Check whether you can undo it

The safest design moves what you chose to the Trash, where you can still put it back, and leaves emptying the Trash to you.

1. Clean one small category, such as a single app's cache.
2. Open the Trash from the Dock.
3. If the items are there, you can right-click one and choose Put Back. If the Trash is empty, the app deletes for good and every choice is final.

Check that the app asks you to confirm before it cleans, and that its help pages say which of the two it does.

3. Check what leaves your Mac

Going online is not the problem by itself. Most apps do it to check for updates or to confirm a licence. The question is what is sent.

1. Read the privacy policy and look for plain statements about file names, file paths, scan results, analytics and crash reports. Vague wording is an answer too.
2. Open System Settings > Privacy & Security > Full Disk Access to see which apps can read the whole disk. Switch off any you no longer use.
3. Open Activity Monitor, choose the Network tab and run a scan. Find the cleaner in the list and watch its Sent Bytes column. A small amount at launch fits an update check. Steady sending during a scan is worth a question to the developer.

4. Check how it charges

Neither a subscription nor a single purchase is wrong. What matters is that you know the terms before you start.

• Is the price on the website, or only shown after a scan?
• Is it a subscription or a single purchase, and for how many Macs?
• If part of the app is free, does the site say which part before you download it?
• If it is a subscription, is it clear how to cancel?

5. Notice how it talks to you

A full disk is an inconvenience, not an emergency. Be wary of any tool that describes ordinary caches as threats, counts thousands of issues without saying what they are, or sets a countdown on an offer. Honest results read like a list of folders and sizes that you could check by hand.

How MacPrune answers the same questions

We make MacPrune, so judge it by the same four checks. This is what MacPrune v2.0 does.

• What it deletes: Clean runs one scan and sorts the results into three groups: Safe to clean (caches, the Trash, system logs, Xcode data, package manager caches), Review before cleaning (large files, downloads older than 90 days, duplicate downloads, mail attachments) and Handle with care (iOS backups, Docker data). The Disk map is for looking only, and nothing is deleted from it.
• Undo: everything you choose is moved to the Trash after a confirmation. Space is freed when the Trash is emptied, and the app offers to empty it after a clean. The one exception is the Trash category itself: items already in the Trash are removed for good.
• What leaves your Mac: scanning and cleaning happen on the Mac. No file names, paths, sizes or scan results are sent, and there is no analytics, telemetry or crash reporting. MacPrune does go online for four things: to check for updates, to validate a Pro licence, to fetch its notice banner, and to run the network speed test when you click it. It asks for Full Disk Access so it can measure the whole disk.
• How it charges: the free version scans everything and cleans user caches, browser caches and the Trash. Pro is a single purchase with no subscription, one Mac per key, and it unlocks every category. The price is on the pricing page.

MacPrune frees disk space. We do not promise that it will make a Mac faster.

Before you install any cleaner

Run the four checks on a small category first, and keep a backup of anything you could not replace. Most cleanup can also be done by hand: see how to free up storage on your Mac and how to clear System Data. For more on how MacPrune treats your files, read is MacPrune safe.