After the initial roll out was plagued with issues, BlackBerry tried its luck once again last week and rolled out BBM for Android and iOS. The second time around, the launch went smoothly. BlackBerry was also quick to abolish to waitlist after launch so that users could get immediate access to the messenger, which is now finally cross-platform. At this point in time, the BBM app for Android and iOS is available for free. Executive vice president of BBM at BlackBerry, Andrew Bocking, confirms that the service will remain free in the future.
Though that doesn't mean BlackBerry won't monetize it.
Ubergizmo , BBM For Android And iOS Will Remain Free, BBM For Android And iOS Will Remain Free