The F-Droid link leads to a 404, so here is what appears to be the repo for the app as far as I can tell: https://github.com/hjiangsu/thunder

Much like the synopsis, I’m getting a 404 from your link. Searching for it also doesn’t return anything about it (see image)

Going to give this a try, I like how it seems we are going to have a plethora of choices before too long.

The reason for 404 might be that it still needs to be manually signed.

https://gitlab.com/fdroid/wiki/-/wikis/FAQ#how-long-does-it-take-for-my-app-to-show-up-on-website-and-client

hmm… 404 page not found…