Apple's iPhone Duo goes on sale on Friday 23 October. 6pm, our daily money app, already lays itself out for each way you can hold it. We built it in mid-October on the iPhone Duo simulator in Xcode 27.1, and it ships in 6pm 2.0.0 on the App Store on 6 November. This post covers what the iOS 27.1 SDK gives you, how we got it into React Native, and the one design question that took the most thought: what should folding a phone shut mean in an app you close once a day? Every snippet is from...