[bbatsell]

One technique I occasionally use is to look at the “zap” stanza of an app’s homebrew cask formula:

https://github.com/Homebrew/homebrew-cask/blob/f44500902e420...

Based on the “notion-updater” I’m guessing there’s also a launchagent/launchdaemon that is “updating” (read: reinstalling) it whenever you manually delete it.