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Duo-Man Turns iPhone Duo Into a Virtual Sony Walkman

The viral hackathon demo shows how the hinge and dual displays can create tactile, nostalgia-driven interfaces that could shape early third‑party apps.

Overview

  • Developer Vidit Bhargava built Duo-Man as a BitRig hackathon demo and posted a video that went viral, drawing roughly two million views after he shared it on X on Sept. 27.
  • The app uses the Duo’s two screens and hinge as core inputs: users open the phone to browse and “insert” a cassette and close it to start playback, recreating the physical Walkman ritual.
  • Bhargava recorded real Walkman button clicks and tape static to reproduce an authentic sound, and the demo includes chunky on-screen transport controls and a visible spinning tape on the cover display.
  • The project is being turned into a formal App Store release with planned Apple Music and local file support plus an Apple Pencil ‘roll’ feature, and the developer says Spotify may be added later; the app is not yet available and will require normal App Store review.
  • The Duo-Man reaction highlights a broader trend where Apple’s foldable iPhone and developer tools are prompting fast prototypes and retro, form-factor-driven apps that could influence early buyer demand for the iPhone Duo ahead of its Oct. 16 preorders and Oct. 23 availability.