> Is this a false positive?
it's always hard to tell with these things
> does anyone recommend an alternative app for a comic reader?
you can try OpenComic or NeeView
if none of them satisfy your needs you can visit Alternativeto.net for alternatives
I use opencomic, it has pretty clean UI, can customize scroll direction, double page view, etc. Plus it has what I haven't seen in any other reader - anilist sync built in.
calibre, OpenComic, or CDisplay EX. calibre and CDisplay EX for book formats (typically for official releases), OpenComic for images in a folder (typically fan translation)
Edit: CDisplay EX is Windows and Android only so scrap that