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I remember that app! It sounded so cool but was only available for iOS at the time and when I saw the Android app a few years later by change it was only a weird proof-of-concept where you can transmit folder-icons from within the app to another phone with the app.

Mh, looks like they're still around: https://www.chirp.io/

I really like the concept, would be really nice to have a functional app one day.