Designers use general-purpose vector editors like Sketch and Figma to mock up mobile UIs. Play is a design tool that offer a different approach: designing directly on an iPhone or iPad. Dan from Play joins Mark and Adam to talk about the problem with mirror apps; how much time you should spend on sketching before “getting your hands on the clay”; and why developer handoff should be a collaboration, not a handoff. Plus: the correlation between the loudness of your mechanical keyboard and your coding skills.