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LumaDisk
What it is
LumaDisk is a disk space analyzer for macOS and Windows that maps files and folders to show what is using storage. Its interactive sunburst and treemap charts update as a scan runs, and it supports external drives. Network volumes can be analyzed in read-only mode. The app groups regenerable developer folders such as node_modules, /target, .next, and DerivedData. It can group duplicate files with one copy selected to keep, and list files of at least 100 MB that have not been opened for six months, a year, or two years. LumaDisk supports iCloud Drive, OneDrive, and Dropbox; Google Drive is described as coming soon. Local scans make no network requests, and the app says it does not send file names, contents, folder listings, scan results, or in-app usage statistics. Requirements are macOS 12 or later on Apple Silicon, or Windows 10 or later on x86-64 or ARM64. Scanning and the sunburst view are free forever. The listed license is $6.89 a month, billed as a one-time payment rather than a subscription, and covers up to five Macs.
For and against
For
- Sunburst and treemap charts update during scans.
- External drives are fully supported.
- Groups regenerable developer folders and duplicate files.
- Local scans make no network requests.
- Free plan retains disk scanning and sunburst view.
Against
- Network-volume analysis is read-only.
- Google Drive support is coming soon.
- The license covers up to five Macs.
- Requirements specify macOS 12 or later or Windows 10 or later.
The verdict
LumaDisk offers visual disk analysis, specialized file grouping, and support for external drives across Mac and Windows. Its free plan retains scanning and the sunburst view; the listed license is a one-time payment despite the displayed monthly term.
Who it suits
LumaDisk suits Mac and Windows users looking for a visual view of disk usage, including people managing developer build folders or duplicate files. It also fits users who need external-drive scans or read-only network-volume analysis.
Plans and prices
Free
disk scanning · sunburst visualization · scanning remains free indefinitely
Read 15 Oct 2026 · lumadisk.com
LumaDisk license
unlocks paid features · lifetime updates · license FAQ says up to 3 devices
Read 15 Oct 2026 · lumadisk.com
On the record
- AlternativeTo profile
- AlternativeTo lists LumaDisk as proprietary, pay-once software for Mac and Windows and reports eight interface languages, dark mode, offline use, and no tracking.alternativeto.net · read 15 Oct 2026
- AlternativeTo reviews
- The AlternativeTo profile explicitly says it has no comments or reviews.alternativeto.net · read 15 Oct 2026
- API and self-hosting
- The opened official materials describe a local desktop application and do not document a public API, SDK, or self-hosted deployment.lumadisk.com · read 15 Oct 2026
- Build caches
- It detects and groups regenerable developer folders such as node_modules, /target, .next, and DerivedData.lumadisk.com · read 4 Oct 2026
- Cloud authentication
- OneDrive and Dropbox connections use device-side OAuth with PKCE, keeping credentials and tokens on the user's machine.lumadisk.com · read 15 Oct 2026
- Cloud integrations
- Supported cloud locations are iCloud Drive, OneDrive, and Dropbox; Google Drive is listed as upcoming.lumadisk.com · read 15 Oct 2026
- Cloud privacy
- Cloud connections use OAuth with PKCE on the device, and credentials, tokens, and cloud data are not routed through or stored on LumaDisk servers.lumadisk.com · read 4 Oct 2026
- Deletion behavior
- Reclaiming permanently deletes selected items instead of sending them to Trash or the Recycle Bin, with a ten-second undo period.lumadisk.com · read 15 Oct 2026
- Deletion safeguards
- Reclaim permanently deletes files, provides a ten-second undo window, and prevents system folders from being queued for deletion.lumadisk.com · read 4 Oct 2026
- Developer cache detection
- LumaDisk automatically groups regenerable caches such as node_modules, Rust target folders, .next, and Xcode DerivedData.lumadisk.com · read 15 Oct 2026
- Device-limit discrepancy
- The homepage FAQ says a direct license covers up to three devices, while the EULA grants up to five personally controlled devices and says Microsoft Store rules supersede that limit for Windows.lumadisk.com · read 15 Oct 2026
- Disk views
- It displays folders and files in interactive sunburst or treemap views, and the chart updates while a scan is running.lumadisk.com · read 4 Oct 2026
- Documentation
- The official site provides user guides covering topics such as macOS System Data, large-file discovery, hidden Windows folders, and alternatives.lumadisk.com · read 15 Oct 2026
- Drive coverage
- The app can scan internal disks, external drives, USB media, SD cards, network volumes, and connected cloud accounts.lumadisk.com · read 15 Oct 2026
- Drives
- External drives are fully supported, while network volumes are supported for read-only analysis.lumadisk.com · read 4 Oct 2026
- Duplicate finder
- Duplicate groups are presented with a suggested copy to retain, while one copy from each group is always preserved.lumadisk.com · read 15 Oct 2026
- Duplicates and unused files
- It groups duplicate files with one copy selected to keep and lists files of at least 100 MB that have not been opened for six months, a year, or two years.lumadisk.com · read 4 Oct 2026
- External drive scans
- Yeslumadisk.com · read 22 Sep 2026
