This app is designed to send and record messages and voices using a HAM or regular radio.

In order to use this app normally, a HAM FM tranceiver or a general radio (Walkie Talkie) is absolutely necessary, and the device needs an audio signal input/output terminal so that it can be connected to the smartphone through an audio line.

Also, if you would like to purchase a connection adapter to connect your smartphone and device, please contact the developer.

Even in environments where network is not available, such as the Internet, you can use a Walkie Talkie to send and receive text messages or voices with each other.
Voice can also be recorded as a separate WAV file, and voice recognition and translation services can be used as needed.
Voice recognition and translation can use Google Cloud Platform API. (However, users need to sign up for service with Google)