Between is an app developed by South Korean startup VCNC. Between provides a quick chat option between couples, a photo album and message functions. Although there are other similar apps gaining popularity, Between is by far the most successful based on the number of downloads. Today Between announced that they have hit the 1 million download mark.

Between first launched its open-beta on November 22, 2011 and its official 1.0 version on March 7, 2012.

Metrics:
Total Downloads: 1,000,000
Msg/day: 4,600,000
Monthly Active User: 500,000
Average time spent/month: 300 minutes(Comparison to other services: Facebook - 405 minutes // Twitter - 89 minutes // Linkedin - 21 minutes // Google + - 3 minutes)

Click here to read the post on the Between team beSUCCESS did in May.