I finally found it! This app was so good in the Galaxy S4 days. I combined it with "Ghost Radar." They both took me to places with regular responses, and a whisper in my ear that had me running. I'm a big dude... & I sprinted as hard as I could. I don't know how this app didn't get a lot more recognition. I tested this by putting it up to electronic devices to make sure the alertsounded when they should. And when it went off away from the electronics, it would get intense sometimes. Pray before messing around with this stuff. It's interesting, but it's not a game.