Not sure whether you were specifically referencing it, but this was made for an episode of Silicon Valley, and is also a real, functional app.

On the show, it was originally created for detecting hot dogs, but found a second (and far more lucrative) life as a penis detector.

https://www.engadget.com/2017-05-15-not-hotdog-app-hbo-silic...

More technical discussion here: https://medium.com/@timanglade/how-hbos-silicon-valley-built...