See every
byte on your
disk.

Sunburst chart

Full-disk scan completes in seconds, not minutes. Perceptually-uniform color ramp, so your biggest files leap out the moment it's done.

Build-cache radar

node_modules, /target, .next and DerivedData, auto-detected and grouped. Reclaim gigabytes in one click.

Zoom any wedge

Drill into any folder to re-layout the chart on that subtree. Breadcrumb trail keeps you oriented.

Cloud drive support

iCloud Drive, OneDrive, and Dropbox. LumaDisk maps what's actually stored there, including files that only live in the cloud, not just the copy synced to your disk. Google Drive is coming soon.

Ships with macOS + Windows

Built with Rust and GPUI, the same GPU-accelerated stack powering Zed. Runs native on Apple Silicon and Windows ARM64. No Electron, ever.

Private by default

Your scans stay on your machine. No file names, contents or results are ever sent to us, and no account is required. Cloud drives you connect talk straight to your provider, so your data never reaches LumaDisk.

Yes, on both macOS and Windows. Every install comes with a 7-day free trial of the full app, with no card required up front. When the trial ends, scanning stays free forever. You keep the sunburst and can always see what's eating your space. A one-time license unlocks the rest.

A macOS license covers up to 5 Macs you own or control. On Windows, you unlock the full version by buying the license inside the Microsoft Store, and Microsoft applies its own device rules to that purchase. Each platform is licensed separately, but you never need to pay twice for the same app. Bought for macOS and want Windows too? Email [email protected] and we'll send you a Microsoft Store code. Bought on the Store and want the Mac build? Same thing in reverse.

Yes. Pay $6.89 once, own it forever. All future updates are free, including major versions. No subscriptions.

Yes. Direct macOS purchases come with a 14-day money-back guarantee. Email [email protected] and we'll refund you in full, no questions asked. Windows purchases go through the Microsoft Store, so Microsoft issues those refunds under their own policy. Full details are on our refund policy page.

The app sends us nothing about your files: no names, no contents, no scan results. Local scans never touch the network. The one exception is a cloud drive you connect yourself. It authenticates directly with your provider (Microsoft, Dropbox; Google Drive coming soon) over OAuth, and your files are never routed through LumaDisk's servers.

External drives: yes, full support. Network volumes: read-only analysis is supported.

macOS 12 or later on Apple Silicon, and Windows 10 or later on x86-64 and ARM64. Both versions are native. No Electron, no emulation.