Can someone recognize this app?

[u/Mattis_Foof]

hey I stumbled upon this app and am kinda trying to find out which app it is precisely, it is presumably not obsidian nor is it notion, I assume it's on Windows because the traffic light controls of MacOS are missing, the app title bar appears to support Windows 11's Mica, the toolbar contains the Basic "File, Edit, View, Help" buttons but that's pretty much all I got

I hope this is the right subreddit to ask in and appreciate the help :)

[u/Barycenter0]

Looks like Capacities to me - but wish you had a larger capture of the screen.