This sounds very interesting, but before I plunk down $25 I'd like some kind of demo! This is a real problem with the app store for too many applications.

First, I would say that it's a plain text outliner, which takes advantage of a number of the Markdown conventions, and has a powerful Xpath-modelled query language under the hood, as well as a simple @key(value) tagging system and some unusual magic in .timer and .todo modes.

Second, I would say that its the fastest and most fluid medium in which to think and write that I have ever seen.

(It also works pretty well with Marked :-)