It is similar, but has some unique characteristics that make it interesting (and to me, compelling). The primary one is easy, automatic, and fast bidirectional linking. The other that comes to mind is the lack of a hierarchical organizational structure; there’s no thinking about “what bullet does this new thing need to be indented under” when compared to WorkFlowy.

If you’re a fan of WorkFlowy I recommend checking it out; I suspect there’s a good chance it will resonate with you.