I used Relay for reddit and would like a app that works similarly.
Currently I use Connect for Lemmy, but there are a few things missing.
A big one for me is a button to hide all post I have interacted with (clicked the picture, up/down voted, read comments etc.)
Also it should change the text color if I clicked the link not just read the comments.
I use list mode, in Relay there is a easy access switch that lets you change the picture side (onthe right or on the lwft) on the fly.
I tried pretty much all of the Android clients / webapps. Connect is currently the one that is the most like Relay (favorite lists, community tab, general UI) but still missing key components. As a former Relay user, I feel you.