I’m enjoying Mlem for iOS. Quite a few display options and customizations, and runs smoothly. I haven’t totally decided on it yet though, as I am still testing quite a few.
Edit: This post got me to try out some of the apps again, and I think I may actually use Avelon on iOS for now. Seems to be closer to Apollo, which I enjoy.
Thank you for posting about Spotube! I hadn’t heard of this one before and it looks great.