Freedom251 › Disk Space Analyzers
FreeSize
by FreeSize
What FreeSize is
FreeSize scans drives and shows which files and folders use the most storage, largest first. It provides treemap, sunburst, and heatmap visualizations, with one-click zoom and an option to reveal an item in the file manager. The folder tree expands live during scanning, beginning with top levels. Analysis runs locally on Windows, macOS, and Linux; the maker says file names and contents are never transmitted. The application performs read-only analysis and does not change or delete files on its own. Its free plan includes unlimited scans, all three visualizations, and light and dark modes. Pro adds background drive monitoring that warns when storage is getting tight, plus a portal showing device history, trends, and volume usage. The portal is hosted in Switzerland, and multiple devices can be managed centrally. Pro costs 29 CHF a year. Version 0.3.3 is available without registration.
Who it suits
FreeSize suits desktop users who need to locate large files and folders visually on Windows, macOS, or Linux. Pro is for people wanting storage warnings, history, and centralized monitoring across devices.
What it does well
- Shows storage through three visual views
- Scans locally without transmitting file names or contents
- Read-only analysis does not alter files
- Free plan includes unlimited scans
- Pro adds background monitoring and device history
What to know first
- macOS support requires version 12+ on Apple Silicon
- Linux support is listed as Ubuntu 24.04+ AppImage
- Background monitoring requires Pro
- Pro costs 29 CHF a year
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | CHF 0 · Unlimited scans · treemap, sunburst & heatmap · Windows, macOS & Linux · light & dark mode | Free |
| Pro | CHF 29 / year · Everything in Free · background monitoring · FreeSize Portal & history · multiple devices, centrally | 29 CHF a year |
As freesize.ch lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
FreeSize offers local, read-only disk analysis with several visualizations and a free unlimited-scan plan. Its paid tier adds ongoing monitoring, portal history, and centralized multi-device management.
Facts from FreeSize's own pages
- Free plan
- Yes · freesize.ch, 22 Sept 2026
- Getting started
- Version 0.3.3 is available to download without registration. · freesize.ch, 11 Oct 2026
- Headquarters
- 3376 Graben, Switzerland · freesize.ch, 28 Sept 2026
- Live scanning
- The folder tree grows live during a scan, showing top levels first. · freesize.ch, 11 Oct 2026
- Local analysis
- Analysis runs locally on the device, and the maker says file names and contents are never transmitted. · freesize.ch, 11 Oct 2026
- Optional metrics
- The maker says FreeSize Pro sends anonymous usage metrics only if the user chooses to enable them. · freesize.ch, 11 Oct 2026
- Desktop platforms
- windows,macos,linux · freesize.ch, 22 Sept 2026
- Portal
- The Pro portal shows device history, trends and volume usage, and is hosted in Switzerland. · freesize.ch, 11 Oct 2026
- Pro monitoring
- The Pro plan includes background drive monitoring that warns when storage is getting tight. · freesize.ch, 11 Oct 2026
- Purpose
- FreeSize scans drives and shows which files and folders use the most space, largest first. · freesize.ch, 11 Oct 2026
- Read-only
- FreeSize performs read-only analysis and does not change or delete files on its own. · freesize.ch, 11 Oct 2026
- Scan scope
- files_folders · freesize.ch, 22 Sept 2026
- Security
- The app is code-signed with DigiCert EV and notarized on macOS. · freesize.ch, 11 Oct 2026
- Support
- The site lists [email protected] as its support contact. · freesize.ch, 11 Oct 2026
- System requirements
- The maker lists Windows 10 and 11 or Server 2019+, macOS 12+ on Apple Silicon, and Linux AppImage on Ubuntu 24.04+. · freesize.ch, 11 Oct 2026
- Treemap view
- Yes · freesize.ch, 22 Sept 2026
- Visualizations
- It offers treemap, sunburst and heatmap views, with one-click zoom and a way to reveal an item in the file manager. · freesize.ch, 11 Oct 2026
Where FreeSize stands on Freedom251
- Disk Space Analyzers#41 of 105