Chat91 is a secure voice chat app. It has been designed for people who want to meet friends, family, or colleagues and share their moments with them. Chat91 allows users to create their own groups and invite others to join. Chat91 is the best app for audio chatting with friends. It has a simple interface and supports two-way audio chatting. It is one of the best free audio chatting apps in the Android market.

You can create a group by selecting the desired contacts and you can invite your friends to join the group by sharing the link with them.