I use SkyDemon on a Windows 10 PC and a pair of iPads.  The "What's here" function on iPad is excellent, but the implementation on PC has two niggles for me:

1‌.  It pops up whenever the cursor stops moving.
T‌his is a pain from a usability perspective; most of the time I want to see the map, not "What's here", so every move of the mouse must be followed by a click to remove the unwanted information box.  This differs from the behaviour on iPad, where you must do something to make the box appear - ergonomically the right way ‌around.  It would be better, and more consistent, to make "What's here" on the PC require a mouse click, just as it requires a screen tap on a tablet, IMHO.

2‌. The fonts on the PC version are not well rendered.
T‌he iPad version uses nicely rendered fonts, readable, elegant, just what you'd expect.  The PC version doesn't and isn't.  I freely admit that this is a minor niggle, but ‌the aesthetics of SkyDemon is one of its strong points.  I suspect someone will tell me that in the PC version, the "What's here" box is rendered in the same way as all the other map text, which I can believe, but the ratty anti-aliasing is more noticeable against the plain white background of the "What's here" box and there is an expectation that although the map is a graphic and the labels can be a bit rough around the edge,  in this context text is text and should be treated accordingly.