App Cleaner is a macOS utility designed to thoroughly uninstall applications from your Mac. Unlike simply dragging an app to the Trash, which often leaves behind leftover files and data, App Cleaner aims to remove all associated files, such as preferences, caches, support files, and other remnants. This helps to free up disk space and prevent conflicts.

Different versions of App Cleaner exist, some offering more features than others. Generally, they provide functionalities such as :

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Identifying associated files:

Scanning your system to find all files linked to a specific app.
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Selective removal:

Allowing you to choose which files to delete, giving you more control over the uninstall process.
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Complete uninstallation:

Removing both the application itself and all its related components.
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Improved performance:

By removing unnecessary files, it can potentially improve your Mac[SQ]s performance.

While convenient, it[SQ]s always a good idea to back up your data before using any cleaning utility, just in case something goes wrong.