Vidit Bhargava (developer of Lookup (blog.viditb.com/lookup-at-10) and Movie Buzz (apps.apple.com/us/app/movie-buzz-movie-tracker-app/id524388922)):

Duo-Man offers the complete walkman experience on the iPhone Duo. Open the Duo to pick and “insert” the cassette, Close the Duo to start listening. Yes, I actually recorded the button clicks and static noise from a real Walkman!
More like this, please.
★ (daringfireball.net/linked/2026/09/28/duo-man)