An indie developer has built an app that turns Apple’s upcoming iPhone Duo into a virtual Sony Walkman, using the foldable’s hinge to mimic the classic cassette player’s flip-open door. Creator Vidit Bhargava calls the app Duo-Man, which he designed in BitRig’s new iPhone Duo development environment.
On the iPhone Duo’s 7.6-inch inner display, Duo-Man lets users open the device to pick music and “insert” a cassette, then snap it shut to start playback in an 80s-style interaction. Bhargava told reporters he recorded button clicks and static from a real Walkman to make the experience feel authentic.
iPhone Duo Walkman experience
Duo-Man won second place at a recent Bitrig hackathon in San Francisco, and Bhargava’s post about the app on X (Twitter) has attracted more than 2.1 million views. The developer is turning the project into a proper release: the finished app will support Apple Music and local files, and include an Apple Pencil feature for “rolling” the cassette loop, a common battery-saving Walkman hack. Depending on popularity, Spotify support may be added.
No release date has been announced for Duo-Man. The iPhone Duo itself will be available for pre-order beginning Friday, October 16, with availability starting October 23.

