[2] Like many mobile phone messaging applications, Couple allows users to share text, photos, video and other content.
It is a competitor to apps like WhatsApp, Facebook Messenger, and KakaoTalk, but it is unique in that it is for communicating with exactly one other person.
[3] Couple is one of a slew of mobile applications that intentionally confine their communication to a small group, as opposed to large public or semi-public networks like Twitter.
[1] TenthBit, the company producing Couple,[6] is part of the Y Combinator startup incubator.
[9] Since April 22, 2019 (5 years ago) (2019-04-22), the app is defunct and the web interface returns Error 503.