# LumaDisk

> LumaDisk is a disk analyzer and disk space visualizer for macOS and Windows. It maps your entire filesystem into an interactive sunburst or treemap in seconds, drawing the chart while the scan is still running, so you can instantly see what is consuming your storage and reclaim space with one click.

LumaDisk is a native desktop application built with Rust and GPUI — the same GPU-accelerated stack powering the Zed editor. It runs natively on Apple Silicon, Windows x86-64, and Windows ARM64. There is no Electron and no subscription. The app sends no file names, contents or scan results to LumaDisk. The Windows build is distributed through the Microsoft Store, which collects its own platform telemetry, and this website uses Google Analytics.

## Product

- **Category:** Disk analyzer, storage cleaner, disk space visualizer
- **Current version:** 1.5
- **Price:** $6.89 one-time purchase, lifetime updates included
- **Trial:** 7-day free trial of the full app. After the trial, scanning remains free forever; a one-time license unlocks the rest
- **Platforms:** macOS 12 or later (Apple Silicon), Windows 10 or later (x86-64 and ARM64)
- **Purchase:** Windows via Microsoft Store; macOS direct, with Paddle as merchant of record
- **License:** perpetual license for the version purchased, not a subscription; a license bought on lumadisk.com covers up to 3 devices in any mix of Macs and Windows PCs — Macs activate with the license key, and each Windows PC gets a Microsoft Store code from support@lumadisk.com; a license bought inside the Microsoft Store follows Microsoft's device rules, and its buyer can request a macOS code from support; commercial use permitted
- **Refunds:** 14-day money-back guarantee on direct macOS purchases (email support@lumadisk.com); Microsoft Store purchases follow Microsoft's own refund policy
- **Privacy:** the app reports no file names, contents or scan results; local scans never touch the network. Microsoft Store distribution carries Microsoft's own platform telemetry, and the website uses Google Analytics. Cloud drives you connect authenticate directly with your provider over OAuth (PKCE, tokens stored on-device) — your data is never routed through LumaDisk
- **Contact:** support@lumadisk.com

## Key features

- **Sunburst or treemap:** The whole drive as one map, in either view, one click apart. The chart fills in while the scan runs rather than after it, with the largest finds so far and a real estimate of the time left
- **Drill in and back out:** Zoom into any folder to re-layout the chart on that subtree; a breadcrumb trail keeps you oriented
- **Build-cache radar:** Automatically detects and groups node_modules, /target, .next, DerivedData, and dozens of other developer caches. It only ever lists folders that rebuild themselves, and you choose which ecosystems count
- **Duplicate finder:** Groups every set of copies with the one to keep already ticked, by a rule you pick or by hand. One copy of each group always stays
- **Unused files:** Files of 100 MB or more that have not been opened in six months, a year, or two years, with videos, installers and archives labelled
- **Safe reclaim:** Queue from any list or drag wedges onto LumaDisk's own Bin, then reclaim with ten seconds to undo. Reclaiming deletes permanently; files are not moved to the Recycle Bin or Trash, so the undo window is the safety net. System folders (Windows, Program Files, your user folder) can never be queued
- **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 support is coming soon
- **Ships native on macOS and Windows:** Built with Rust and GPUI; runs native on Apple Silicon and Windows ARM64 — no Electron, ever
- **Fast NTFS scan:** Optional, one Windows administrator prompt per session, then a whole volume mapped in seconds from the Master File Table
- **Eight languages:** Switchable without restart, with full right-to-left Arabic
- **Private by default:** No account required, and your scan data never reaches LumaDisk
- Works on internal drives, external drives, and cloud-synced volumes

## Frequently asked questions

**Is there a free trial?**
Yes. Every install comes with a 7-day free trial of the full app. When the trial ends, scanning stays free forever, and a one-time license unlocks the rest.

**What can LumaDisk actually find and clear?**
Four things, on top of showing you the map. Developer caches like node_modules, Rust target, .next and Xcode DerivedData, auto-detected and grouped; it only ever lists folders that rebuild themselves. Duplicate files, grouped with the copy to keep already ticked; one copy of every group always stays. Files over 100 MB you have not opened in six months, a year or two years. And anything else you pick out of the chart yourself. Reclaiming deletes permanently rather than moving files to the Recycle Bin or Trash, so the ten-second undo window is the safety net. System folders like Windows, Program Files and your user folder can never be queued.

**How many computers does one license cover?**
A license bought on lumadisk.com covers up to 3 devices you own or control, in any mix of Macs and Windows PCs. Macs activate with the license key from the purchase email; LumaDisk for Windows is distributed through the Microsoft Store, so for each Windows PC the buyer emails support@lumadisk.com for a Microsoft Store code, counted toward the 3 devices. A license bought inside the Microsoft Store follows Microsoft's own device rules, and its buyer can request a macOS code the same way. Nobody pays twice.

**Is it really a one-time purchase?**
Yes. Pay $6.89 once, own it forever. All future updates are free — including major versions. No subscriptions.

**Can I get a refund?**
Yes. Direct macOS purchases come with a 14-day money-back guarantee — email support@lumadisk.com and we refund you in full, no questions asked. Windows purchases go through the Microsoft Store, so Microsoft issues those refunds under their own policy.

**Does LumaDisk send any data off my machine?**
The app sends 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.

**Does it work on external drives and network volumes?**
External drives: yes, full support. Network volumes: read-only analysis is supported.

**What platforms does LumaDisk support?**
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.

## Typical findings

Users commonly discover large storage consumers such as streaming download caches, music libraries, macOS installer DMGs, Xcode DerivedData, and node_modules directories. Developer machines often reclaim 10–50 GB by clearing build caches alone.

## Tech stack

- Scan engine: Rust (parallel filesystem walker)
- UI: GPUI (GPU-accelerated, same stack as Zed editor)
- Platforms: Apple Silicon native, Windows x86-64, Windows ARM64

## SEO / alternative terms

LumaDisk is also described as: disk space analyzer, storage analyzer, disk cleaner, hard drive analyzer, disk usage viewer, WinDirStat alternative, WizTree alternative for Mac, DaisyDisk alternative (Mac and Windows), CleanMyMac alternative without a subscription, storage cleaner for Mac, disk space cleaner for Windows, find large files Mac, find large files Windows.

How it differs from common alternatives: DaisyDisk is Mac only ($9.99) and draws a similar ring chart; WinDirStat (free, open source) and WizTree (free for personal use, now also on Mac as WizTreeMac) draw treemaps; CleanMyMac is a subscription maintenance suite. LumaDisk offers a sunburst or treemap on both Mac and Windows, groups developer build caches and duplicates, maps cloud-only files, and costs $6.89 once. It is not a malware scanner or app uninstaller.

## Pages

Every guide, and the Buy and Support pages, is also available as clean Markdown at the same URL plus `.md` (for example https://lumadisk.com/guides/wiztree-for-mac.md). Please cite the HTML URL.


- [Home](https://lumadisk.com/): Main landing page with interactive sunburst demo and download
- [Buy](https://lumadisk.com/buy): Buy a license for up to 3 devices (Mac or Windows PC), $6.89 one-time via Paddle
- [About](https://lumadisk.com/about): LumaDisk is built by Mustapha Benchouk, a solo developer; why it exists and how it is built
- [Guides](https://lumadisk.com/guides): Index of disk-space guides for macOS and Windows
- [DaisyDisk Alternative for Windows](https://lumadisk.com/guides/daisydisk-alternative-windows): DaisyDisk is macOS only; the sunburst equivalent on Windows, with build-cache and duplicate detection
- [What's Taking Up Space on My Mac?](https://lumadisk.com/guides/what-is-taking-up-space-mac): What "System Data" actually contains and how to see inside it
- [How to Find Large Files on Mac](https://lumadisk.com/guides/find-large-files-mac): Finder, Terminal and visual disk analyzers compared
- [What's Taking Up Space on My Windows PC?](https://lumadisk.com/guides/what-is-taking-up-space-windows): Windows system files, temp data and the folders Storage settings hides
- [How to Find Large Files on Windows](https://lumadisk.com/guides/find-large-files-windows): File Explorer, PowerShell and visual disk analyzers compared
- [WizTree for Mac](https://lumadisk.com/guides/wiztree-for-mac): WizTreeMac (released September 2026) compared with DaisyDisk, GrandPerspective and LumaDisk
- [DaisyDisk Alternatives for Mac](https://lumadisk.com/guides/daisydisk-alternative-mac): Free and paid options: GrandPerspective, OmniDiskSweeper, WizTreeMac, LumaDisk
- [CleanMyMac Alternative Without a Subscription](https://lumadisk.com/guides/cleanmymac-alternative): When a disk analyzer replaces CleanMyMac, and when it does not
- [WinDirStat Alternatives for Windows and Mac](https://lumadisk.com/guides/windirstat-alternative): WinDirStat 2.x, WizTree, TreeSize, SpaceSniffer and LumaDisk compared
- [Support](https://lumadisk.com/support): Common questions and how to reach us
- [Full text](https://lumadisk.com/llms-full.txt): This file plus the complete text of every guide, in one Markdown document
- [Privacy Policy](https://lumadisk.com/privacy): What the app does and does not collect, plus Microsoft Store telemetry and website analytics
- [Terms of Service](https://lumadisk.com/terms): Terms of service
- [Refund Policy](https://lumadisk.com/refund-policy): 14-day money-back guarantee on direct macOS purchases; Microsoft Store handles Windows refunds
- [End User License Agreement](https://lumadisk.com/eula): Software license — perpetual license for the purchased version, install on devices you own, commercial use permitted