Version 1.2

Dramatically faster. Stays responsive.

Smart parallel scanning

The scanner now scales with your Mac's CPU cores and goes deeper into the directory tree in parallel — big drives finish in a fraction of the time.

Instant chart, no more freeze

The visualization appears the moment a scan completes — even with millions of files. The UI stays responsive throughout the whole scan.

Smarter uninstall

When an app installs protected helpers (like VPN clients), you now get a clear admin-permission notice with a one-click Reveal in Finder action instead of a cryptic error.

Features

Everything you need to understand your disk

Powerful visualization tools, smart cleanup, and a privacy-first approach. All running natively on your Mac.

4 Visualization Modes

Sunburst, Bar Chart, Arcs, and Treemap. Switch between views to explore your files from every angle.

Size Heatmap Colors

Instantly spot the largest files and folders with color-coded heatmap visualization. Big files glow hot.

App Manager

Find installed apps, see their true disk footprint including scattered caches, and uninstall the ones you no longer need.

Scan History

Your last 10 scans are saved automatically. Revisit any previous scan to see how your disk usage has changed over time.

Quick Look

Preview any file right from the chart view without leaving the app. Press Space to peek, just like Finder.

iCloud Aware

See exactly how much space iCloud files occupy locally versus how much is evicted to the cloud — no more mystery storage.

Visualization

Four ways to look at your disk

Each chart type reveals a pattern the others might miss. Switch with a single click and explore the same data through different lenses.

Sunburst — concentric rings for hierarchical exploration
Bar Chart — direct, precise size comparisons
Arcs — linear take on the sunburst for sibling comparison
Treemap — space-proportional rectangles that fill the screen

The disc/nsider Sunburst chart showing folder sizes as concentric rings colored by a green-to-red size heatmap

Treemap view of disc/nsider showing every folder as a rectangle sized proportionally to its disk usage — Treemap — space-filling rectangles

Bar chart view of disc/nsider with horizontal bars sized by file size — Bar Chart — precise comparisons

Concentric arcs view of disc/nsider showing files as layered ring segments — Arcs — layered ring view

Cleanup

Reclaim hidden space with App Manager

Most apps scatter files all over your Mac — caches, preferences, support files, login items. disc/nsider finds them all, shows the real size of each app, and removes everything cleanly in one step.

True total size for every installed app
Detects scattered caches and support files
Polite handling of protected/VPN apps with admin-permission helpers
Reclaim gigabytes of forgotten disk space

The disc/nsider App Manager showing installed apps with their scattered file footprint and an Uninstall button

100% local. Zero tracking.

disc/nsider scans your disk entirely on-device. No analytics, no telemetry, no network calls — your file paths never leave your Mac. Distributed as a sandboxed Mac App Store app.

Read the privacy policy →