I propose renaming the tag podcasts-app to podcasts.app for consistency with other app tags.
The majority of tags for apps on iOS, watchOS, and macOS end in .app
to specify it is about the platform-specific app, rather than the service itself. For example:
activity.app, apple-watch.app, contacts.app, mail.app, music.app, notes.app, photos.app.
See also: Rename [terminal] to [terminal.app] to make it clear the tag is for the macOS app
-app
(but not anymore).