Sorry I missed your reply, sunday. The app is called Chatstep. I got it from the android Play Store, and I’m pretty sure it’s available for Apple too.
If you want to use it from a PC, the site is here: https://chatstep.com/ and seems to work seamlessly with app users.
I set up a room called “Lehigh Sports”, and its password is “goblet”. Feel free to check it out anytime. I’d love to see others in it during Friday night’s hoops, but I’ll also pop in tonight during the soccer playoff match to see if anyone is in.
No registration is required for the app, and you can choose whatever display name you want (nickname) when you join a room.