I call it Cimini. A set of metal bars. A robot arm, which swipes through the hanging bars. Here's a video showing what it's all about:
It participated in a Hackster competition.
That is AWEsome!!!
More videos coming soon...
Here's a longer video.
How did you develop the phone app?
Great Robot by the way 
It's not an app per se, it's a web page with Javascript.