Mobile App UI/UX Design Skill This skill guides the creation of professional, polished mobile app interfaces that follow proven design principles used by top-tier apps like Airbnb, Duolingo, Spotify, Revolut, and Phantom. Core Philosophy Great mobile UI isn't about flashiness — it's about intentionality. Every pixel, every spacing value, every color choice should serve the user. The goal is to create interfaces that feel smooth, personal, and alive — not just functional. Before designing anything, understand three things: 1. What is the user trying to accomplish? (reduce friction to that goal…