I will preface this with I only use it's web interface so I'm unsure of an app and you can judge from the image on their site if it is modern enough for you. I'd describe it as simple overall but it does have dark themes.
Maybe that's why they ended up with Vance as the pick? A relative newcomer who'd risk getting sacrificed to become a more hosehold name? I can certainly imagine others looking on at the at end of Pence's tenure and choosing to avoid the position.
I will preface this with I only use it's web interface so I'm unsure of an app and you can judge from the image on their site if it is modern enough for you. I'd describe it as simple overall but it does have dark themes.
I've overall had a good experience with freshrss and their docker container https://hub.docker.com/r/freshrss/freshrss.
https://freshrss.org/