Rather than treat each app as a different software, we should focus on the tool itself and treat all apps from within the same category just as its various interfaces. This way, rather than categorize them by an industry - "music", "medical" or "lifestyle", we should do this by the work they do, i.e. "music player" for music streaming services, "movie player" for those that stream videos and "word processor", "graphics editor" or "project manager" for those that, respectively, enable to process text, edit a graphics and manage a project.