Comment on AppZapper

I was unable to continue using this after migrating to a new Mac. After the automated form for receiving it by email produced no result, emails from me to the developer to get my license number, which I didn't seem to have in my records for some reason, were left unanswered. So I've replaced AppZapper, which I'd been using for three years, by AppCleaner, which is free and is actually a better application.