Clever apps show off iPhone Duo's potential, early adopters say
Developers are building for Apple's foldable with apps that use both screens in creative ways, from a retro cassette player to a notebook that mimics paper
More than a month after Apple announced its first foldable phone, the iPhone Duo, a wave of optimised apps is starting to demonstrate what the device can do beyond the incremental upgrades of recent iPhones. From a Walkman-inspired music player to a notebook app that curls its pages, developers are using the Duo's two screens and hinge to create experiences that were not possible on a single slab of glass.