I am on primal for desktop. Everything I've tried for Android GrapheneOS is unusable. I tried Amethyst (what even is that, looks like bare-bones nothing there), I tried Iris, and I tried FreeFrom, which seems to be a read/browse only mode app. So I'm sticking with desktop for now. Primal in my Brave browser on mobile isn't horrible, but it keeps making me log in over and over again to perform each action. Even when I turn Brave shields OFF.