NullDisk our pick
A native macOS disk-space analyzer with an interactive radial map. Native SwiftUI, allocated-size honesty, staged Trash-based removal, zero data collection.
Top 5 Disk Graph alternatives
Delve
An honest APFS-aware treemap plus sunburst with collector cleanup.
SpaceLens
A bubble-map storage explorer inside the CleanMyMac suite.
Space Radar
Sunburst, treemap, and flamegraph views for disk nerds.
DaisyDisk
The beloved sunburst map that made disk cleanup beautiful.
直接比較: NullDisk vs Disk Graph
| NullDisk | Disk Graph | |
|---|---|---|
| Visualization | Sunburst radial map | Mixed |
| Platform | macOS 14+ | macOS + iOS |
| Pricing | Paid | Paid |
| Open source | No (offline, zero-data) | No |
| Cleanup flow | Staged collector → Trash | Varies by tool |
基本情報: Disk Graph
| Disk Graph | |
|---|---|
| Vendor | Nicolas Kick (Desairem) |
| Platform | macOS + iOS |
| Pricing | Paid — Paid one-time purchase (around $6 at time of writing) |
| Visualization | Mixed |
| Open source | No |
2026年9月更新 · 価格は変動します。提供元でご確認ください。 執筆時点の価格: Paid one-time purchase (around $6 at time of writing).
NullDiskが向く人 …
- Honest one-time purchase instead of subscriptions or gated tiers.
- Fully offline with a published zero-data policy — nothing ever leaves your Mac.
- A staged removal collector: queue suspects, review, then Trash everything together.
Pros & cons
＋ 強み
- Multiple views: pie charts, treemaps, and file search
- Snapshots let you compare disk usage over time
- Universal purchase across Mac, iPhone, and Vision Pro
－ 弱み
- Jack-of-views approach means no single standout visualization
- Cleanup workflow is thinner than dedicated cleaners
- Smaller user base means fewer guides and comparisons
よくある質問
What is the best alternative to Disk Graph for Mac?
For most Mac users it's NullDisk: native SwiftUI, a radial sunburst map, a staged removal collector, and zero data collection. Disk Graph users who want mixed views and paid pricing will feel at home within minutes.
Is there a free alternative to Disk Graph?
Yes — GrandPerspective and Disk Inventory X are free and open source with genuine treemap analysis. They lack NullDisk's collector workflow and sunburst map, but they find the biggest hogs fast.
How do I switch from Disk Graph to NullDisk?
Note the largest folders Disk Graph flagged, then run the same scan in NullDisk and rebuild the cleanup in its removal collector. The full walkthrough is on our switching guide.
まとめ
Disk Graph is a capable tool for mixed fans on macOS + iOS. But if you want the whole job — see, stage, and safely remove — done natively on a modern Mac, NullDisk is the upgrade. 移行ガイド →