Between is a social network app for couples. It was created by VCNC, a South Korean company. The app was boringly designed for the Asian market but its popularity has caused it to spread throughout the US and the rest of the world. In a nutshell, Between is a social network for couples. Unlike other social networking apps where everything you post is there for the world to see, Between is private. You can share photographs, messages and memories with your special someone. There is real time chatting. Plus there are a lot of emoticons, hearts and smiley faces you can use.