All nips none. Because different nips have different and in many cases conflicting objectives. But for your question, Amethyst for Android works and can configure and use your relay list.
Discussion
Thanks for the suggestion. Currently using Amethyst and Primal on Android. I like the UI of Primal better. But sometimes it falls short. Amethyst is feature-rich. But the UI can be more polished like Primal.