Self-hosted Miniflux (https://github.com/miniflux/miniflux) + Reeder on iOS / macOS.

Miniflux like so many supports the Fever API which means I can use almost any RSS app on the platform I need it on. I also wrote a small sidekick for Miniflux that I can use to filter posts I don't like (Sponsored posts etc.): https://github.com/dewey/miniflux-sidekick