Zello

Zello is an application for Android that provides you with the opportunity to communicate with other people by sending short voice messages.

PTT radio

Developers present this app as a digital alternative of Walkie Talkie. PTT means push to talk and it is a very convenient way to chat with an individual or a group of people. It reminds of voice messages function from popular utilities like Telegram.

You have the opportunity to find other users who are located nearby and join a chat with them. This can be very useful while participating in a public event outdoors. It is possible to unite up to 6000 people in one group. 

Moreover, you can synchronize your contacts list and send private messages to your friends. There is also the ability to exchange images and other types of files. 

The app is free to use. However, it is possible to upgrade your version by donating money. The premium is called ZelloWork and allows you to create encrypted channels and save all messages. You also get access to better servers that ensure the stability of the connection.

Features

• allows you to communicate with other users via voice messages;
• it is possible to join group chats and talk to someone privately;
• there is the ability to purchase a premium version and get additional tools;
• free download for Android.