FYI, the app is not open source, neither is Obsidian. This is not a con (depending on your viewpoint), as developing an app is an investment and the dev can do as they see fit.
Good to see that the developer is upfront about this and seems to be developing a sensible monetisation strategy. Lately lots of shiny tools have disappeared from view or are in the process of shutting down. Maybe I am getting old but this has dampened my enthusiasm somewhat.

That said, I was intrigued enough to download and try and although far from a thorough evaluation so far, I am quite impressed by what I saw. Excellent near-term roadmap, too. I'll definitely keep an eye on it and test some more, thanks for the tip!

Any news yet regarding the price of the Pro version?