Coming from Windows
Looking for TreeSize on a Mac?
TreeSize, from JAM Software, is the disk analyzer many Windows users reach for first. Its editions are made for Windows; JAM Software's pages do not offer a Mac version. If you have moved to a Mac and miss it, this page goes through what TreeSize users rely on and how Mac Deficit does each, including what it does not do yet. Everything said about TreeSize comes from JAM Software's own pages, linked at the end, as they read on 14 November 2026.
In short
- Mac Deficit does what most people open TreeSize for: shows where a drive's space went, largest first, as a list and as a treemap, and lets you remove what you no longer need, to the Trash, where it can be put back.
- It does not do what TreeSize's paid editions add for administrators: duplicate search, reports in Excel or HTML, scheduled scans, cloud storage such as SharePoint or Amazon S3.
What you used in TreeSize, on the Mac
| TreeSize (Windows) | Mac Deficit (Mac) | |
|---|---|---|
| Folders by size | A tree like Windows Explorer's | A list of the folder you are in, largest first; open a folder to go into it |
| The picture | Treemap, pie and bar charts | A treemap inside an apple, one cell for each folder and file, beside the list |
| Removing something | Deleted from within the app; undoing a delete is in the Professional edition | To the Trash, with its size shown first; Put Back returns it. Delete Immediately is a separate command that asks first |
| A record of what you removed | Not stated | Yes: a history kept on your Mac, with Put Back, exported as CSV or JSON |
| What it will not remove | Not stated | macOS's own files, your home folder and its standard folders, and the places macOS protects for your privacy |
| Finding the largest files | Not stated | Search by name or kind below any folder, the largest 1,000 first, with the space all the matches take |
| Duplicate files | Personal and Professional | Not yet |
| Network drives | Network shares | Yes: a mounted share is scanned like any folder (tried on an SMB share) |
| Cloud storage | SharePoint, Amazon S3, Azure Blob storage, WebDAV and more in the paid editions | No |
| Reports | PDF and print in Free; Excel, CSV, HTML and more in the paid editions | No |
| Scheduled scans | Professional | No |
| Price | A Free edition; Personal from $25.20 and Professional from $49, per user a year | $3.99 once (Personal), $9.99 once for a household of up to three (Family), at launch |
A few words that change on a Mac
The Recycle Bin is the Trash. What Mac Deficit removes goes there, and the confirmation tells you how much emptying the Trash will free. Put Back, in the app or in Finder, returns an item to where it was.
The nearest thing to running as administrator is Full Disk Access. macOS keeps some folders, Mail and Messages among them, from every app until you allow it in System Settings › Privacy & Security › Full Disk Access. Mac Deficit asks for it and tells you what it could not see without it.
Drives have one more kind of space. A Mac's startup disk holds space no folder shows: macOS's own volumes, local snapshots and purgeable space that macOS frees by itself when it needs to. After a scan of a whole drive, Mac Deficit shows where all of the used space went, found, macOS, could not be read, with purgeable space apart, so the numbers add up to what the drive says.
About the name
An app called TreeSize is sold on the Mac App Store. It is made by another developer, not JAM Software.
Sources
TreeSize's facts are from jam-software.com/treesize: its pages on TreeSize Free, the editions and their prices, and the features. "Not stated" means those pages do not say; it does not mean TreeSize lacks it. If anything here is out of date or unfair, write to support@macdeficit.com and we will correct it.
Last checked 14 November 2026 · TreeSize is a product of JAM Software. Mac Deficit is not affiliated with it.