I’ve been using substreamer to access my Navidrome server from my android phone initially but I just came to learn about Tempo, which is also a nice app. What I like about substreamer among others is the option to let it download fanart from an external source by itself bypassing navidrome. There might be more nice apps, so I’m curious what you folks are using on your mobile devices.
I’m using Symfonium. Originally got it because it allows pulling from subsonic, plex and jellyfin libraries simultaneously.
After switching all my stuff over to navidrome, rather than having it split between plex and navidrome, I kept it because I paid a couple bucks for it and really like the customizability
On my PC I use sonixd. No particular reason for that one except it was probably the first one I found, is cross platform and also looks quite good