The app doesn't require you to register since it directly uses your Instagram account in order to work. Once the app is installed, you can begin to speak privately with any other Instagram user, as long as they accept your conversation request.
Thanks to this chat, users can have long conversations with other users, instead of just posting simple public comments like in the past. In addition, you can send text and voice messages.
InstaMessage-Instagram Chat is an incredibly interesting instant messaging tool, thanks to which, we can widen our circle of friends to include all the awesome people who post their photos in Instagram.
Requires Android 2.2 or greater.