Blackberry Messenger or known as BBM for android and IOS is now finally released after postponed for a month. It's last 21 October that Blackberry announced it's released. Just less that 2 days after it's realease, the BBM apps in google play has already downloaded by more than one million people. It's really impressive.
For you who are looking for BBM apps for android you can go here
For IOS user, you can also download it on apps store.