Ask HN: Tools to search your HN favorites?

HN is one of the highest quality forums out there, and I regularly mark articles and posts as favorites, now I have thousands. I use raindrop for this and add tags and categories. I generally read HN on mobile using the Hack iOS app.

It would be incredibly useful to have a high quality search tool that (smartly) searches through my favorited HN articles. Looking for recommended tools.