Seriously. In the meantime, the rest of the world all uses WhatsApp. For group chat it's hard to beat. I use signal with family and some friends but getting people to switch is impossible. And allegedly it has group chat but it's not obvious how that works even to a techie like me. Asking people to switch phone platforms is ridiculous, especially people from poorer countries where an iPhone costs at least a couple months' salary. Lately I've also used keybase with another friend and it seems promising but the user base is almost nonexistent.