This looks cool. I just started using MindNode yesterday [0] which is a similar tool (although it takes a very different approach - it's more visual). I wasn't sure of the effectiveness of these sort of tools as I usually just use text files + Notability sketches but I have to say they are very useful in helping to structure thoughts better. I'm interested to try this. [0] https://www.mindnode.com/
Bonus is that Mindnode has a built in outliner view as well. I use Mindnode for this type of thing 99% of the time.
Horses for courses I guess.
Bike looks neat though.