Apps and developer tools
Install and remove applications
Recognize App Store, disk image, and installer-package workflows, then remove an app without deleting unrelated personal files.
8 minute lesson
Mac applications arrive through several installation paths. The path tells you something about where files may be placed and how removal works.
App Store and disk images
App Store applications install through your Apple account and update through the store.
Many applications downloaded from a developer arrive in a .dmg disk image. Open the image, drag the application into Applications, then eject the image. Launch the copy in Applications, not the temporary copy inside the mounted image.
A disk image is a container. Dragging the app usually copies one application bundle, but the app can create settings and data later when it runs.
Installer packages
A .pkg installer can place files in several system locations and may request an administrator password. Use it only when you trust the publisher and expected the package.
Before continuing, read the installer steps and destination. For sensitive software such as drivers, VPN clients, or security tools, check the developer’s current removal instructions too.
Remove according to the installation method
For a simple app bundle:
- Quit the application.
- Move it from Applications to the Trash.
- Empty the Trash only when you are sure you no longer need it.
This may leave preferences, caches, and documents. Those files are not necessarily harmful, and deleting every file with a similar name can remove user data you wanted to keep.
Use the vendor’s uninstaller when the app installed login items, background services, system extensions, or drivers. Confirm those components stopped afterward.
Try this: choose one installed app and identify whether it came from the App Store, a disk image, or a package. Find its official uninstall guidance before changing anything.
Lesson completed