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Uninstalling an app and freeing up space
On a Mac, uninstalling means dragging an icon to the Trash — and that is enough in the vast majority of cases. The rest comes down to two exceptions and one deeper question: if you have to make room every month, this is no longer a tidying problem.
The rule, and its two exceptions
- Open the Applications folder, drag the app to the Trash, empty the Trash. For an app from the App Store or distributed as a drag-and-drop bundle, that is the end of it.
- Two exceptions: apps installed by an installer package, which nearly always ship their own uninstaller, and software that adds a system extension — antivirus, drivers, backup tools. For those, use the uninstaller the publisher provides.
How to go about it
Four routes depending on how the app arrived on the machine. The first covers nearly every case.
- From the Finder: open Applications, drag the icon to the Trash, then empty the Trash.
- From Launchpad, for App Store apps: hold the icon until it wiggles, then click the cross.
- For software installed by an installer package: look for an uninstaller in the app's folder, or on the publisher's site.
- Then check System Settings, General, Login Items: a removed app sometimes leaves an orphan entry there, to be taken out by hand.
Never remove an app from the command line or by digging through system folders unless you are sure: on a Mac the Trash is enough and breaks nothing.
What is left behind, and whether it matters
An uninstalled app leaves a few preference and cache files. That is the reason cleaning apps exist — and the reason they rarely achieve much.
- Preferences weigh a few kilobytes. Deleting them frees nothing measurable, and wipes your settings if you ever reinstall the app.
- Caches can be heavy for a handful of apps only — browsers, video editing, developer tools. Those are the ones worth looking at, not the rest.
- Local backup data from some apps deliberately stays in place after uninstalling. That is a safety net, not an oversight.
- Only one case justifies a deep clean: reinstalling an app that misbehaves, to start again without its old settings.
Where the disk space actually goes
Open System Settings, General, Storage: macOS breaks down what occupies the drive. In practice it is nearly always the same culprits.
Photos and videos
full local library → turn on storage optimisation
Device backups
iPhone or iPad backed up locally → delete the old backups
Forgotten large files
downloads, disk images → the Documents section of Storage
Trash not emptied
up to tens of gigabytes → empty the Trash
Local Time Machine snapshots
temporary copies on the internal drive → macOS clears them itself when space runs short
Virtual machines, games
a single file of tens of gigabytes → move to an external drive
Drive simply too small
128 or 256 GB from the factory → a larger SSD
When tidying is no longer enough
If you spend your time making room, the problem is no longer what you install: it is the capacity of the drive. A nearly full SSD also slows the machine down, because the system needs free space to work.
- Below 10 % free space, macOS slows noticeably. That is the threshold where changing the drive starts to pay.
- On Macs where storage is replaceable — up to the 2015 MacBook Pro, 2017 MacBook Air, iMac and Mac mini of the same period — going from 128 GB to 500 GB or 1 TB costs a fraction of a new machine.
- On recent models the storage is soldered and cannot be changed. Only an external drive adds capacity.
Read the model number engraved underneath, an A followed by four digits: it determines the SSD format, which changed four times in ten years.
FAQ
Should I install a cleaning app?
In the vast majority of cases, no. macOS handles its own caches and temporary files, and the Storage section of settings already shows where space is going. Cleaning apps rarely free more than the Trash does, and some delete files the system needs.
Is dragging to the Trash really enough?
Yes, for App Store apps and for those that install by drag and drop, which is nearly all of them. The exceptions are antivirus software, drivers and backup tools, which must go through their own uninstaller.
I deleted an app and it still appears at startup.
That is an entry left in Login Items. Go to System Settings, General, Login Items, and remove the line. Nothing breaks.
My drive is permanently full, what comes first?
Look at the Storage section first: photos, device backups and large files are nearly always the bulk of it. If you are still cramped after that clear-out, the drive is too small for your use, and a larger SSD settles it for good.
