Symfonium has been great in my experience and does offline and caching. Check it out: https://symfonium.app/

I haven't spent much time trying Jellyfin but I really like having my music information in a central location (Navidrome) and being able to stream to a variety of different clients based on my device. It works well for me so far.

If you listen on high-end equipment the audio quality is noticeably worse than many other solutions and depending on your music taste, Spotify often removes content or doesn't have it in the first place.

Music disappearing is really annoying.

I use Navidrome with Feishin as a client on PC and Symfonium on my phone. Symfonium allows me to cast in the same way as Spotify.

Symfonium is paid but appears to be one of the rare apps that is still thoughtfully created by somebody who actually uses it. The developer deserves the support.

Symfonium [0] is pretty universally loved (I also use it), but doesn’t care if you point it at Navidrome, or Jellyfin, or anything else supported.

[0]: https://symfonium.app/

Haven't tried it yet but looks quality!

Any comparable options for iOS? Not everyone in my household is on Android unfortunately

Edit: seeing play:sub mentioned maybe I'll have to check that one out

That's a good point. I had actually forgotten that it's compatible with Jellyfin. Thanks for the reminder.

Have you tried SuperSonic? I found it better then Feishin