[FreshFries]

You probably mean Richard Vijgen's art project:

http://www.architectureofradio.com

The iOS application:

https://apps.apple.com/us/app/architecture-of-radio/id103516...

[1f60c]

Wow, HN rocks! That's exactly the app I was thinking about.

[qorrect]

I remember this also, sadly it's more of an art project.