http://www.chaton.com/download.html
Visit with your BB browser. It's Samsung's xplatform app, and works with BlackBerry OS, iOS, and Android. (Watch out, it's a beast at just over 7MB)
Like Whatsapp, it uses a phone number and 4-digit sms registration verification.
![](http://i1229.photobucket.com/albums/ee475/EsperOni/utf-8BU2l4VG9vbHNfMTMzNDM3MjY0MzU1OC5qcGc.jpg)