ONE Messgenger app is an iPhone exclusive messsaging applications that it's creators say, "allows you to stay in touch with everyone you know without paying for SMS. It’s all free. Now you can send and receive anything from photos, videos, voice, news articles, postcards, YouTube, stickers and more – all within the app." The interface and scale of communication tools seems pretty dynamic, like a mashup of Facebook, WhatsApp, Instagram, BBM and Snapchat.
The above video gives a glimpse of what the app can do while a sign-up page here, ensures you get notified when the app is available.