BlackBerry has officially launched BBM (BlackBerry Messenger) in other platform than BlackBerry itself which is in iOS. For Indonesian people, you can start downloading BBM for iPhone from this link. It's targetting for iPhone and not applicable to iPod and iPad.
As for the Android platform, it hasn't been released yet, but probably shortly and don't try to download scam applications which tried to trick you. Just relax and wait for the official announcement and link to the Google Play.