Tried Manuskript - a novel writing program. It's not very useful. Too much book keeping and filling stuff in. Then I end up with a file I can't plop into other programs without exporting I guess. And then putting it back in after editing it as plain text is more work.

Also no writer's thesaurus. And no Text-to-Speech assistance for catching flubs. Those were the main things I was looking for

I think it better to just used a normal tabbed text editor for chapters and notes.