Chat apps such as Whatsapp, Line, WeChat are excellent tools for group chat. They are so good at chatting that people use it a lot - for whatever things they want to say. So groups end up having a lot of messages, photos sharing, etc, making it hard to find important information....
Facebook has an excellent Group function, but Facebook is Facebook, a lot of people hate it, and those who love it get too much information crowded in one place.
GroupTiv tries to be in the middle - it is not a chat app, and it is not social media. Members can still chat (if chat feature is enabled by Admin), but the app starts with showing important information (posts), order by importance as determined by the Group Admin.
GroupTiv provide a more focused environment for improved focus and productivity among group members and administrators.