BBM is coming to Google's Android and Apple's iOS operating systems this weekend. The popular messaging app will be available for smartphones running the Ice Cream Sandwich or Jelly Bean versions of Android, as well as iOS 6 and 7.
The Android version touches down on Saturday, while the iOS edition drops on Sunday.
Previously only available on BlackBerry, the app lets you send free messages between business blowers. But now you won't need a BlackBerry, so you can message friends on Android or iOS completely gratis.
It's not the first app to offer such a service. WhatsApp and Viber do the same thing, and work across multiple operating systems. So the launch of BBM could be too little, too late for BlackBerry.
At launch, BBM will offer just instant messages and group chat, but voice and video calls will come at a later date. You'll also be able to share files like photos and voice notes.
BlackBerry has struggled against the rise of Android and iOS in recent years. It launched its BB10 operating system earlier this year, with handsets like the Z10 and Q10.
But with the rise of Android and iOS, and a resurgent Microsoft in the form of Windows Phone 8 (now with added Nokia), the Canadian company has its work cut out to convince people it's a viable alternative.