When comparing AppDelete vs AppTrap, the Slant community recommends AppTrap for most people. In the question“What are the best software tools to fully delete apps from your Mac?” AppTrap is ranked 2nd while AppDelete is ranked 3rd. The most important reason people chose AppTrap is:
AppTrap installs a daemon that runs in the background monitoring the trash, when you drag an app to the trash it will search for associated .plist files that have been left behind and ask to move them to the trash. In other words, AppTrap launches and does the work for you automatically. All you have to do is uninstall apps the old fashioned mac way by dragging apps to the trash.
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Pros
Pro Clean user interface
User interface is easy to understand and use.
Pro Thorough in removing apps
AppDelete plain and simple performs very well in the way it thoroughly cleans out the files that are part of the app that exist in other sections of the filesystem.
Pro Trial available
Pro Prefpane style app
AppTrap installs a daemon that runs in the background monitoring the trash, when you drag an app to the trash it will search for associated .plist files that have been left behind and ask to move them to the trash. In other words, AppTrap launches and does the work for you automatically. All you have to do is uninstall apps the old fashioned mac way by dragging apps to the trash.
Cons
Con Not maintained
Author is dead… so the app won't be updated anymore…
Con Not free
Unlike other alternatives AppDelete is not free.
Con Not Supported in Big Sur
Con Gets some things, not everything
This is thorough enough in cleaning up most of the cruft that gets left behind by applications, but might not get everything for the more invasive applications, especially if some of the files have privileged permissions.
Con Requires using Finder
Does not work if you trash app using alternate file browser like Path Finder.