app files are application bundles that contain all the necessary files and resources for a Mac app. They can be easily deleted by dragging them to the Trash or usingLaunchpad12. Other filetypes, such as .exe, .dmg, .rpm, and .pkg, are either not compatible with macOS or require additional steps to uninstall34.
References: 1 Uninstall apps on your Mac - AppleSupport(https://support.apple.com/en-us/102610)2 How to Uninstall Apps on a Mac (and Make Sure Leftover Files Are
...(https://www.pcmag.com/how-to/uninstall-delete-apps-from-mac)3 How to install and uninstall software on a Mac - LaptopMag(https://www.laptopmag.com/articles/install-unininstall-mac-software)4 How to completely uninstall an app on a Mac and delete all junk files(https://www.xda-developers.com/how-to-uninstall-app-mac/).