WhatsApp Messenger is cross-platform which allows you to exchange messages with your contacts without paying for texts. Whatsapp is a great solution for free communication with your contacts on BBM. Due to the inability to install BBM for iphone this is a great alternative to have bbm for iphone. WhatsApp messenger is available on every platform including iPhone, blackberry, android, and Windows phone.
Stop wasting your time trying to find a way to install BBM for iPhone. There are 100′s of videos and blogs claiming to have a way to get BBM for iPhone, but there is a licensing problem from blackberry to enable you to do this. Most likely there will never be a BBM for iPhone, so WhatsApp is a great free and easy solution to this problem.
WhatsApp is full of features such as texting, MMS, and group chat for all platforms.