That is like saying the IPhone is a copied "concept" from other touchscreen devices.

Well, to be fair, Facebook was the company that created the always open "floating bubble" concept, to my knowledge.

Link Bubble behaves very similarly to Facebook Messenger in this way (the way the bubbles move, how you interact with them, close them, etc), and I can't help but think that Facebook was inspiration for the project.

This is actually a good thing because I always thought that the Chat Heads were a novel idea, though Link Bubble's implementation of the concept is rougher around the edges than Facebook (e.g. "laggier", not quite as clean in design).

According to the developer, Chris Lacy[1], Link Bubble was in development before Facebook's Messenger was released.

[1] https://news.ycombinator.com/item?id=7454918

Ehh. I'm not convinced this point really matters. If you ship a great idea first, you shipped it first.. no?

>Well, to be fair, Facebook was the company that created the always open "floating bubble" concept, to my knowledge.

I believe Holo in Paranoid Android's ROM was first, beating Facebook's app by a few months at least.

There are a lot of apps that draw over other apps on Android before Facebook Chatheads.