RedReader is still going, and is still free. I’ve been using it since essentially its first release over a decade ago. I was the first to suggest the dev accept donations, around 4 years ago, as it’s a one-man job and it used to get regular updates. And the dev has stated he wants to add lemmy functionality alongside the existing reddit code, so users can switch between the two like an account switch, and maintain the UI they are fond of.

(I’m using Thunder currently while I want for RR lemmy support, but obviously I quite like the app, have recommended it to many)