Nothing else is there!
There are just two real outliner apps in this planet: Workflowy and this and a few minor ones... Don’t believe the reviews out there saying that Evernote, OneNote, Google Keep etc do the same. How can that be? They don’t. Those who are into this kind of business know what I am talking about. And compare to Workflowy, Dynalist is an even more improved version -except the general look, I think. Workflowy is still the neat one and classy.