Both give you a binder. One asks less of you to set it up.
Scrivener and DraftProse agree on the core idea: a novel is not one long file, it is a tree of scenes, chapters, characters, and notes you move around as the shape changes. Scrivener pioneered that for indie novelists and built an enormous amount on top of it, including the corkboard, collections, and a compile system with a setting for nearly everything.
That depth is the trade. Scrivener rewards the writer who learns it and can feel like a second project on top of the book for the writer who has not. DraftProse keeps the binder, the documents, the character and research shelves, and the per-document word counts, and stops there. The surface you learn is smaller because the program is doing less, on purpose.