I love it!
To start off, I dont use this to talk to unknown people, I use it with my wife or family members as we are in the same store and what not. Way faster then sending and receiving a message on whatsapp. It has very good setting, I havent been able to try it out using my Apple Watch yet so no comment there. Very good app
ChesAlistar about
Zello Walkie Talkie, v3.29