disc/nsider
Visualize & Reclaim Disk Space
Only for Mac
$5.99
Mac
See where your disk space goes. Stunning visualizations, a built-in App Manager to cleanly uninstall apps, and total privacy.
Visualize & Reclaim Disk Space
Your disk is full — but what's taking up all the space?
disc/nsider gives you the answer in seconds. Scan any drive, folder, or iCloud directory and instantly see where every gigabyte goes — rendered as a stunning interactive sunburst chart you can explore with a single click.
FOUR POWERFUL VISUALIZATION MODES
Choose the view that works best for you:
• Sunburst Chart — Concentric rings reveal your folder hierarchy at a glance. Click any segment to drill in, click the center to step back.
• Concentric Arcs — A clean, linear take on the sunburst for easy size comparison across siblings.
• Bar Chart — Classic horizontal bars, sorted by size, for when you need precise numbers.
• Treemap — Nested rectangles that fill the screen, making it impossible to miss large files.
THREE COLOR MODES
• Size Heatmap — A green-to-red gradient highlights the biggest space hogs immediately.
• Per Directory — Each top-level folder gets its own hue, so you can track ownership at any depth.
• By File Type — Instantly distinguish documents, media, archives, code, and more by color.
FAST, REALLY FAST
disc/nsider's POSIX-based scanning engine processes approximately 60,000 files per second. A full startup disk scan typically completes in moments — not minutes.
ICLOUD DRIVE AWARE
See exactly how much space iCloud files occupy locally versus how much is evicted to the cloud. No more guessing why your disk is full when iCloud says "Optimize Storage" is on.
SCAN HISTORY
Your last 10 scans are saved automatically. Revisit any previous scan to compare changes over time without rescanning.
BUILT-IN APP MANAGER
Wondering what's really left behind when you drag an app to the Trash? disc/nsider's App Manager scans all installed applications, reveals scattered files across ~/Library — caches, preferences, containers, logs — and lets you cleanly uninstall apps with all their leftover data. Reclaim gigabytes you didn't know were wasted.
EXPLORE & ACT
• Quick Look — Press Space to preview any file without leaving the app.
• Context Menu — Right-click to Show in Finder, Copy Path, or Delete.
• Labels Toggle — Turn on chart annotations to see file and folder names directly on the visualization.
• Breadcrumb Navigation — Always know where you are. Click any breadcrumb to jump back up the tree.
DESIGNED FOR MACOS
Built natively with SwiftUI for macOS Sonoma and later. Dark mode is on by default, with a System/Light/Dark toggle in Preferences. disc/nsider feels right at home on your Mac.
100% PRIVATE
disc/nsider processes everything locally on your Mac. No data is collected, no analytics are sent, no internet connection is required — ever. Your files are yours.
Stop guessing. Start seeing. Download disc/nsider and take control of your disk space today.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Big drives scan dramatically faster on multi-core Macs, and the app stays responsive throughout. The chart appears instantly when a scan finishes — even with millions of files. Uninstalling apps with privileged helpers (like VPN clients) now shows a clear admin-permission notice with a Reveal-in-Finder action.
The developer, Julian Christopher Siebert, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Julian Christopher Siebert
- Size
- 1.2 MB
- Category
- Utilities
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Age Rating
4+
- 4+
- Copyright
- © Christopher Siebert
