Not particularly directed at OP, I haven't tried or even downloaded the app. But am I the only one that when I see 'Node' and 'Desktop' in a headline immediately think 'this may be really nice but it is just gonna be to big for what it does'? And, as a followup, what is the appeal of using Node for desktop dev?
Regarding size, it appears to be around 100 MB, so you could have 20971 separate installations of it before filling up a 2 TB drive.
Memory usage could be an issue, but whether that matters will depend on your audience the app. In this case, the aim is toward HN, so it doesn't seem like an issue.