By Phoebe Arslanagić-Little Co-Star has 30m registered users, the majority of whom are young and female. The combination of astrology and artificial intelligence has proved an incredible draw, writes Phoebe Arslanagic-Little Co-star is a popular American app that bills itself as “astrology without the bullshit”. Mulling this paradoxical statement, I gave in to peer pressure and downloaded the app myself after a friend sent me an invite to do so. The app’s aesthetic is clinical and elegant, distinctly non-woo. “Good evening”, it says, followed by a daily nugget of guidance: “Your heart is a sli…