FreeSize
FreeSize: A read-only analyzer with visual scans for free and ongoing monitoring in Pro. Ranked #62 of 104 in Disk Space Analyzers by our editors (3.0/10); pricing: Free plan; best for users wanting ongoing storage monitoring.
At a glance
- Editor score3.0 / 10
- PricingFree plan
- Best forUsers wanting ongoing storage monitoring
- Free planYes
- Paid from29 CHF/yr
- Desktop platformswindows, macos, linux
- Facts checked22 Sep 2026
Where it wins
- Three visualization types: treemap, sunburst and heatmap
- Runs on Windows, macOS and Linux
- Pro adds background monitoring and cross-device history
Where it doesn't
- Background monitoring requires the Pro plan
- Scans cover selected drives or paths rather than automatic cleanup
- Read-only analysis does not modify or delete files
Our verdict on FreeSize
FreeSize is a desktop disk-space analyzer for Windows, macOS and Linux. It scans selected drives or paths and shows storage usage through sorted files and folders, treemap, sunburst and heatmap views. The read-only approach suits users who want to understand what occupies storage without automatic file changes. It is particularly relevant for anyone seeking ongoing visibility across local devices, while the free plan covers users who need on-demand analysis.
The Free plan includes unlimited scans, all three visualization types, Windows, macOS and Linux support, and light and dark mode. The published plans show the Pro tier at CHF 29 per year, adding everything in Free plus background monitoring, FreeSize Portal and history, and centralized use across multiple devices. FreeSize also supports live, progressive scans, giving the analyzer a way to present results as scanning develops. For recurring storage oversight, the Pro additions are the main distinction from the no-cost plan.
FreeSize’s standout focus is visualizing files and folders through multiple views while keeping analysis local and read-only. Pro extends that focus with background drive monitoring and usage history with volume trends through FreeSize Portal, which makes it a better fit for users who want storage patterns over time rather than occasional checks. Users who need an analyzer for selected locations, visual breakdowns and ongoing monitoring should consider FreeSize. Those seeking automatic file deletion or modification should choose a tool designed for active cleanup instead.
Your product? Our editors can test FreeSize in depth and publish a review, labelled as paid · from $149/mo →
FreeSize pricing
All 2 FreeSize plans and prices →
FreeSize fact sheet
| Free plan | Yes |
|---|---|
| Paid from | 29 CHF/yr |
| Desktop platforms | windows, macos, linux |
| Treemap view | Yes |
| Application sizes | Not verified |
| File-type breakdown | Not verified |
| External drive scans | Not verified |
| Exportable reports | Not verified |
| Scan scope | Files_folders |
| Deployment | Cloud, Desktop |
| Platforms | Windows, macOS, Linux |
| Compliance & security | GDPR |
| Support | |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan (source) |
| Website | freesize.ch |
| Facts checked | 22 Sep 2026 |
Alternatives to FreeSize
- TreeSizeA broad Windows analyzer with strong free features and tiered automation tools.9.3
- WinDirStatA classic Windows analyzer with treemaps, file breakdowns, duplicate detection, and CSV export.9.1
- FilelightA free, open-source disk analyzer with strong KDE integrations and ring-based visuals.9.0
See all FreeSize alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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