I have used the Beta for a long time. I am buying it. Perhaps I should point out that the way I mostly use it is rather different from the one proposed by the developer. I outline relationships between authors, concepts, and theories to paste into ConnectedText, like this, for instance:
For some reason, I like it better than the outline:
It costs 14.99. The "Apple Store version" is not yet available.
I would not call it a "mind mapping' application.