It's an amazing app with great functionality. I've always wanted to have those convenient chat heads to make multitasking much simpler. My one complaint is that sometimes the app does not retrieve and display messages sent from the messenger itself, but otherwise it's great!
its nice but laggy and the animation is not smooth on my s6edge+ android7
Looks good. Finding that using the chat head dismisses the notification. Not sure if that can be avoided.
Very dangerous potential spyware