FStream is an iOS App that I used for about 6 years. It still runs nicely on iOS 14.
I find its most stellar feature to be its built-in web server for mangaging your Favorites – a brilliant idea. Most of the online stations that I listen to regularly require manual entry, so easy management is crucial for me.
However, it doesn’t always play the S E B stream smoothly. Sometimes there are pops and other compression artifacts which are not part of the audio itself. Perhaps it’s a buffering thing.
It also tends to drop the S E B stream and not properly reconnect after a few hours of listening time. I don’t know if that’s typical of all streams, or just S E B.