DiskMac

Support

Frequently asked questions

If your question is not here, email support@diskmac.com and it probably should be.

Buying and licensing

Is this a subscription?

No. DiskMac Pro is a single payment of $9 plus tax, covering two Macs, with no expiry and nothing to renew.

If a future major version ever appears it would be a separate, optional purchase. Your existing licence would keep working.

Why is there tax on top of $9?

Dodo Payments acts as merchant of record, which means they collect and remit tax on the sale. What you pay depends on where you are — GST in India, VAT in the EU, sales tax in parts of the US, and nothing at all in some countries. The exact amount is shown at checkout before you pay.

How do I get my licence key?

It is emailed to you the moment the payment clears, and shown on the confirmation page. Open DiskMac, go to Settings › Licence, paste it in and click Activate.

How many Macs can I use it on?

Two at once. You can free a slot at any time by opening Settings › Licence on a Mac you no longer use and choosing “Deactivate this Mac”.

What happens if I am offline?

Pro keeps working. DiskMac re-checks your licence when it can, and if that fails for any reason it carries on for a two-week grace period. A paying customer on a plane is never told they have not paid.

Can I get a refund?

Yes — 15 days, no questions asked. See the Refund Policy.

Is there a free version?

Yes, and it is not a trial. The disk map, power search, large files and live stats are free forever, with no account and no time limit. Pro adds the ability to act on what you find: deleting, uninstalling apps, the advanced search filters and the premium themes.

Safety

Could it delete something I need?

Every removable path has to match a shape that its own rule registered in advance, and clear a deny list covering source code, git repositories, SSH keys, credentials, keychains, Documents, Desktop, and anything outside your home folder. Both checks run again in the instant before removal, so a folder that changed underneath you is skipped rather than deleted.

Anything with a real cost to restore goes to the Trash, and one button puts it back.

What if I remove something and change my mind?

Use “Put it back” on the completion screen. DiskMac records exactly where each item landed in the Trash, so restoring is a move back rather than a guess. It also refuses to overwrite anything that reappeared in the meantime.

Can I stop it suggesting a particular folder?

Yes. Select it and choose “Never touch this”. That exclusion survives every future scan, and you can review or remove exclusions in Settings.

Do I still need backups?

Yes. DiskMac has real safeguards, but no safeguard replaces a backup. Keep Time Machine running.

Privacy

Does DiskMac send anything anywhere?

The scanning and cleanup code contains no network calls at all. The only time DiskMac touches the network is to check your licence key, and that request contains the key and a device name — never a file name, path or size. If you never buy Pro, it makes no network requests whatsoever.

Full detail in the Privacy Policy.

Do you have analytics?

No. No analytics, no crash reporting, no accounts, no telemetry of any kind.

Using it

How long does a scan take?

About 35 seconds for a 109 GB home folder containing 1.6 million files, on Apple silicon. Smaller folders are close to instant. DiskMac reads directory metadata with low-level system calls rather than the slower high-level APIs, and walks several folders at once.

What is the difference between General and Developer mode?

General mode maps any folder on your Mac: treemap, large files, search, live stats and the app uninstaller. Developer mode understands what Xcode, Docker, Node, Gradle, Android, CocoaPods, React Native and Flutter leave behind, and explains why each item is safe to remove and how it comes back.

Both are in the same app. Switch at the top of the window.

What is Strata?

A view no other disk tool has. Size tells you what is big; age tells you what to delete. Strata puts age down the side and size across, so the thing worth removing is whatever is both deep and wide. Click a band to select everything of that age at once.

Why does the uninstaller find things Finder does not?

Dragging an app to the Trash removes the bundle and nothing else. Its caches, containers, preferences, saved state, web storage, logs and launch agents stay behind, sometimes for years. DiskMac finds them by bundle identifier, which is exact, and shows you what it matched on so you can check the reasoning.

Why is it not on the Mac App Store?

App Store sandboxing forbids the file access a storage scanner needs, so a Store build would be blind to most of what DiskMac finds. It is distributed directly, signed and notarised by Apple.

Which Macs does it run on?

macOS 13 Ventura or later. The app is about 2 MB.

Is there a command line tool?

Yes, and it is free. It shares the same engine, the same safety policy and the same allow-list as the app, so you can put it in a build script or a scheduled job. --dry-run reports what would happen and changes nothing.