A free app for Android, by Odnoklassniki Ltd.
TamTam Messenger – free chats and video calls is a messenger application that allows you to send text messages, images, and even audio clips to your friends. With this app, you can also make video calls with your friends or family and even with people who live far away from you.
It is a very easy-to-use application, and you can do all of this without the need to have any previous knowledge of the application or the Internet. The first thing you need to do is to download the application on your device and then you can start using it.
TamTam Messenger lets you invite up to 20,000 people in a public or private group chat and 50 chat admins. You can also make use of thousands of stickers, animated stickers, and GIFs. Calling on this app also allows you to have private or public channels without a limited number of participants. Other features include geolocation services, safety and security, cross-platform, and Bot API.