Buzz It is a Universal App Template for who wants to provide a mobile audio chat service where users can post audio messages in public rooms or easily create their own rooms.
It has Push Notifications for sent messages: the owner of a room will receive a notification when a message has been sent to his/her room.
Users can easily record a message by holding your finger on the record button, listen to the recorded audio and buzz it (send it to the app).

Buzz It is a native Android Studio project, Parse SDK hosted on http://back4app.com, Universal, easy to customize.