The only thing that is required for using Popcorn Buzz is that all the other users also have the program installed on their devices. But, of course, it's not necessary to have Line installed on the same device to be able to use the app.
Popcorn Buzz's interface allows you to easily invite any of the contacts you have on your Android device. You can also use other apps to invite friends to talk.
Popcorn Buzz is an interesting tool that allows you to create an enormous group phone call. Sure, it can get a bit chaotic, but it can also help you socialize in a different way.
Requires Android 4.0 or higher