BlackBerry is making a wider push to get some of its signature products onto competitors’ devices and recently rolled out its popular messaging service to iOS and Android. Popular in many countries around the world, BBM has dropped off a bit in the United States, and BlackBerry wants to leverage its security for reputation to revive it. The app works with text messages, voice notes, emoticons and pictures, and it has a layout similar to the one already on the BlackBerry smartphones. This app is probably most useful to those who really miss their BBM experiences, or who have lots of friends on the network; others may want to see whether it picks up wider adoption before they fully commit. Free, for iOS and Android devices.