Connect and share with those around you without using data

You can't just name something Yo! Yo is sacred.
@mdavep Never heard what happened to Yo. Hasn't been updated since 2015.
@mdavep Yes. And http://twitter.com/yo predates Yo app 😁
@yo you must have had a hell of a 2015 :)
So does this use bluetooth?
Read more, create a wifi hotspot but doesn't use the wifi connection. Interesting.