Radial and treemap views
Choose rings or rectangles, drill into folders, and inspect a size-sorted file list with Quick Look for supported local files.
macOSネイティブのディスク解析
ディスクを圧迫する 正体を見よう。
NullDiskはドライブを計測し、1GB単位でインタラクティブな放射マップに描きます。潜って、不要ファイルを集めて、ワンクリックでゴミ箱へ。
macOS 14+ · Apple Silicon & Intel
検出済み248 GB
スキャン時間31秒
大きな発見···
Xcode Archives~/Library/Developer · 214 items
48.2 GB Docker.raw~/.docker · 1 image
32.0 GB node_modules~/code · 37 projects
21.6 GB Illustrative scan preview. Sizes and scan time are example data.
Simple pricing
All features free.
$9.99 to remove reminders.
NullDisk maps local, SSH, and cloud storage and helps you review cleanup actions. Under our licensing model, every scan and cleanup feature is included in free personal and workplace use.
A personal reminder-free license costs $9.99 once. Organization-owned team licenses cost $9.99 per seat, once. No subscription.
See pricing and license detailsDisk maps in the terminal. Reports for scripts.
The standalone CLI adds a live terminal map, development reports, JSON/NDJSON output, and guarded cleanup. Published downloads are listed separately from the Mac app.
Explore NullDisk CLI →NullDiskの理由
魔法のようなクリーンアップ。
当てずっぽうも表の海も不要。マップを一目見れば、ギガバイトの居場所がわかります。
Local, SSH, and cloud
Scan a volume or folder, connect to an SSH host, or inspect supported cloud accounts through rclone. Sizes and actions depend on the source.
Development Cleanup
Review rebuildable output, eligible Git worktrees, and protected items. Ownership and Git evidence are checked again before removal.
Understand privacy
Local inventories stay on your machine. The Mac app sends anonymous usage telemetry without file names, paths, or contents; see the privacy policy.
使い方は簡単
スキャン。潜る。空ける。
スリムなディスクまで、あと3ステップ。
Scan
Choose a local, SSH, or cloud source. Review live progress and any permission or incomplete-result indicators.
Inspect
Follow large folders in the radial map, treemap, or list. Preview local files and confirm the path and owner.
Review cleanup
Collect selected items and choose the intended action. Trash, permanent deletion, and backup before deletion have different recovery implications.
マップ
ディスクを太陽系として見る。
放射マップは同心円を描きます。内側がドライブ、外側がファイル。安定した色、比例した角度——見たままが真実です。
- ホバーで強調、クリックで潜る、中心で戻る
- 色がリストとマップをつなぐ
- Quick Look・メタデータ・Finder表示を内蔵
- モーション軽減に配慮した滑らかなアニメーション
正直な比較
Compare documented features.
Feature and pricing comparisons published by NullDisk. These are editorial comparisons, rather than independent performance benchmarks. Check each vendor for current details.
Scroll across to compare
| NullDisk | DaisyDisk | GrandPerspective | OmniDiskSweeper | |
|---|---|---|---|---|
| Map | Radial and treemap | Sunburst and file list | Treemap with configurable colors and filters | Largest-first column browser |
| Platform | Mac GUI; separate cross-platform CLI | macOS | macOS 14+ (current release) | macOS |
| Price | Free | Paid | Open source | Free |
| Cleanup | Review source and action: local Trash, explicit permanent removal, or backup/delete; remote and cloud actions depend on the destination. | Collector stages items, then permanently removes them after confirmation and a cancellation countdown. It does not use macOS Trash. | Delete files or folders from the view; review selection and deletion preferences. | Open or Trash selected files from the size-sorted browser. |
質問
知っておくといいこと。
Which systems does NullDisk support?
The native Swift/SwiftUI Mac app requires macOS 14 or later on Apple Silicon or Intel. The separate CLI supports terminal workflows on macOS, Linux, and Windows; see the available downloads.
What if a folder cannot be scanned?
Denied and incomplete locations remain marked. A partial result is not a complete inventory; grant the appropriate access and scan again where needed.
Does NullDisk remove files automatically?
You choose the files and removal action. Local actions include Trash, explicit permanent removal, and backup before deletion. Git-aware development cleanup rechecks current evidence before acting.
What information does NullDisk send?
The Mac app sends anonymous usage events without file names, paths, or contents. There is currently no in-app telemetry opt-out. Purchases process license/payment information separately. Read the privacy policy for details.
空きを作る
ディスクが再び呼吸する。
Explore your storage, review what you no longer need, and choose how to remove it.