Nix for mac · Apple Silicon & Intel

Every app leaves
something behind.

Caches, logs, support files, saved states - the clutter your apps forget to clean up. Nix finds every byte, shows you exactly what it is, and removes only what you choose.

Download for macOSSee how it works
Free download · macOS 14+ · No account required

Real recording, not a mockup: Discord and its leftovers, 1.1 GB, examined and moved to the Trash.

43%
Average hidden behind apps
95.4 GB
Median recovered per Mac
0
Trackers - fully on-device #
<10s
Full library scan ^

The hidden footprint

The size in Finder is only half the story.

When you install an app, macOS reports the bundle size - the icon you dragged to Applications. But the app keeps writing: derived data, device support, render caches, logs, saved states. None of it shows up next to the app, and almost none of it is removed when you delete it.

Nix measures the whole footprint, app by app, so the number you see is the number that's actually on your disk.

Prefer to do it by hand? Our step-by-step guide shows how to completely uninstall apps on Mac - every Library folder to check, and what to do when an app won't delete.

XcXcode
12.5 GB app · +54.3 GB leftover
FCFinal Cut Pro
7.5 GB app · +10.2 GB leftover
VVMware Fusion
1.0 GB app · +128 GB leftover
MMotion
4.0 GB app · clean

What Nix does

A cleaner that respects your judgement.

No one-click "optimize." No scare tactics. Nix shows you what's there, in plain terms, and lets you decide.

Finds leftovers automatically

Open Nix and it quietly scans your whole library in seconds - no buttons to hunt for. Results fill in live as each app resolves.

XcXcode+54.3 GB
FCFinal Cut Pro+1.2 GB
VMicrosoft Excel

List or cards, your call

Scan a dense list when you want speed, or switch to a calm card grid that sells each app's footprint at a glance. One tap between them.

Examine every byte before it goes

Open any app to see its files grouped by kind - Application Support, Caches, Logs, Saved State - each with a real path and size. Check exactly what you want gone. Nothing is removed without your say-so, and your files never leave your Mac.

Nix Examine panel for Microsoft Outlook: leftovers grouped by kind with real paths and sizes, Remove 3.42 GB

Honest by design

Apps that are already tidy say so. Buttons disable instead of nagging. No notifications, no upsells, no "your Mac is at risk." Just the truth about your disk.

Entirely on-device

Every scan runs locally. No account needed. Nix never sees your files content - neither do we. #

A look inside

Real screens from a real Mac, not mockups.

Captured on a MacBook with 104 apps installed. Every number you see here is what Nix actually found.

Nix library view: 104 Mac apps shown as cards, sorted by size, 58 GB total
Every app, by real size. 104 apps and 58 GB in one view, largest first, with the version and last-used date on each card.
Nix Examine view for Microsoft Outlook listing leftover files with paths and sizes
Examine before you remove. Outlook’s leftovers grouped by kind, with the real path and size of each one. Uncheck anything you want to keep.
Nix celebration screen: 1.1 GB recovered after removing Discord, with Share and Done buttons
See what you got back. Discord and 8 leftover files, 1.1 GB, moved to the Trash. Nothing is ever deleted permanently.
Nix library in list view grouped by System, App Store and Third Party
List or cards, grouped by source. System, App Store and third-party apps, each with its size, version and when you last opened it.
Nix Leftover Hunt: leftover files from 106 uninstalled apps, 3.2 GB reclaimable
Leftover Hunt. Files from 106 apps that are no longer installed, 3.2 GB on this Mac, found and ready to reclaim.
Nix History view showing every removed path for Discord and a Restore from Trash button
History, with undo. Every path Nix moved, and a Restore from Trash button if you change your mind.

The full tour in 1 min 40 s, no sound: library, Examine, removal, History and restore, Leftover Hunt, and Login Items.

The Examine view

Surgical, never destructive.

Cleaners that hide what they delete are how people lose work. Nix does the opposite - it lays every file on the table first.

Grouped by kind. Support files, caches, logs and saved state, each totalled - so you know what you're touching.
Real paths, real sizes. Every row is the actual location on disk, in monospace, with its measured size.
You choose, then remove. Uncheck anything you want to keep. The total updates as you go.
Nix with the Examine panel open for Microsoft Outlook: leftovers grouped under Application Support and Containers, each with its real path and size, Remove 3.42 GB

Pricing

Buy it once. Keep it forever.

No subscription for a utility you open once a month. One license, every future update for this major version, on all your Macs *.

Free
$0
Scan every app, free.
  • Full scan & every app’s size
  • List & card views
  • See each app’s leftover total
  • Remove up to 2 GB free

Download for macOS

Nix Pro · one-time
$29/ forever
Unlimited cleanup, on every Mac you own.
  • Everything in Free
  • See every file & exact path
  • Unlimited removal
  • Auto-scan on launch & menu bar
  • Use on all your Macs *

Download for macOS

Storage, examined.

Examine your Mac
in under ten seconds.

Download Nix free and see what your apps have really been keeping.

Download for macOS
Universal · macOS 14 Sonoma or later · Free download

# Your files, file paths and app list never leave your Mac. Nix does send limited device & diagnostic information (including your IP address) - see the Privacy Policy.
^ Scan time and recoverable space vary with your apps and disk; figures are from internal testing on a 1 TB drive.
* A single Nix license can be activated on up to 2 Macs you own.

Also from us

OneClick QuitAll - close every open app on your Mac in one click. The perfect first step before you uninstall.

See QuitAll →