DiskSizer vs LumaDisk
DiskSizer
disksizer.whhite.comLumaDisk
lumadisk.comSide by side
| Figure | DiskSizer | LumaDisk |
|---|---|---|
| Price from | Free | $6.89/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Plans published | 1 | 4 |
| Spec score · Disk Space Analyzers | 7.6 (#70) | 8.9 (#4) |
| Free plan | Yes | Yes |
| Platforms | The product is described as a Windows desktop app built with Electron 28. | macOS,Windows |
| Purpose | DiskSizer is a Windows disk space analyzer for seeing what is using storage across drives. | LumaDisk is a disk space analyzer for Mac and Windows that maps a filesystem so users can see what is taking up space. |
| Scan scope | files_folders | files_folders |
| Support | The site links to GitHub Issues for reporting issues. | Support is handled directly by email and X, with bug reports requested to include screenshots and the operating-system version. |
| Technology | The listed stack includes Electron 28, React 18, D3 v7, a C++ N-API addon, TypeScript, and Tailwind CSS. | LumaDisk uses a Rust scan engine and GPUI interface, runs natively on Apple Silicon and Windows ARM64, and does not use Electron. |
| Treemap view | Yes | Yes |
Plans
LumaDisk
- FreeFree
- LumaDisk license$6.89 a month
- LumaDisk license$6.89, paid once
- LumaDisk license$6.89, paid once
In their own words
DiskSizer
DiskSizer has no write-up on Specifiction yet; its figures are above.
LumaDisk
LumaDisk is a disk space analyzer for macOS and Windows that maps a filesystem to show what is using storage. Its interactive sunburst and treemap views update during a scan. The app groups regenerable developer folders such as node_modules, /target,.next, and DerivedData, and groups duplicate files with one copy selected to keep. It also lists files of at least 100 MB that have not been opened for six months, a year, or two years. External drives are fully supported; network volumes can be analyzed read-only. Cloud support includes iCloud Drive, OneDrive, and Dropbox, while Google Drive is described as coming soon. The free plan keeps scanning and the sunburst view available. A LumaDisk license is listed at $6.89 a month, billed as a one-time payment rather than a subscription, and covers up to five Macs. Requirements are macOS 12 or later on Apple Silicon, or Windows 10 or later on x86-64 or ARM64. Reclaim permanently deletes files, with a ten-second undo window and safeguards against queuing system folders.