Holler allows Opterus users to chat on their mobile devices and share pictures and status updates in a feed. People can post, like, comment and reply to feed posts. People can also create one-on-one as well as group chats, name their chats, add people, and chose to leave a chat. Your Opterus Administrator can also set permissions to decide who can use the chat app.
Note that only active Opterus users with permission can login to Holler and you need to contact Opterus to activate Holler before you will be able to login.