I’ve been using Eternity for a week now and am honestly blown away! I believe their settings are a bit confusing, but they are granular and allow you to customize the app a lot. The final result is really nice. I got it to look similar to what RIF for Reddit was for me, while also trying out some new changes I like. Other apps are nice, for example Liftoff’s interface for settings is the best I’ve seen in any app, since it shows a pictorial demo of what the settings you’ve chosen will look like.