Too Long; Didn't Read
The app is a chat progressive web application with React, NodeJS and firebase. It comes with a lot of features like push notifications. It works offline you can use it offline and you can send text messages only when you come back online they will be automatically sent. The app may not run because free limits of firebase or hosting service has been exceeded!! It may not be able to run because of the free limits. It is very well explained in the GitHub repository. It is also possible to send an audio message or receive one in a conversation.