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.
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
As a music server it has a few shortcomings (that can be fixed with contributed code - ATM this one is waaay down my TODO list so anyone that wants to step up - go for it, please) ..
It currently has non existent support of FullAlbum.flac with 'standard' TrackIndex.Cue track timing lists.
I ripped a lot of my early albums and CD's as single lossless FLAC (and APE and another format) files with track timings courtesy of either hand entry or the exactCD (?) database - there are many such rips out there is full album rips where popular for a good run of time.
Jellyfin sees these as single files, not as an album of tracks, and plays them as such with no track selection, next track, or resume.
Addressing this is on the github issues list.
Foobar2K and other music players have no issues with these files.