I take a lot of short notes. For that CintaNotes does the job. (The free version is adequate for the standard user.) I can create notebooks, tag each note, etc.
When I decide to write book or an article, CintaNotes is not good; better to have a Markdown Editor, like Joplin or Obsidian.
The problem is it is a pain to have notes in one app, and start copying them to another app (and some times I start taking notes to, say, Joplin, and forget to copy it to CintaNotes, etc.); all kinds of things that slow me down and work less efficient than it could be.
Is there an app which somehow nicely combines both modes?