Judging from the screenshot, I believe it's made by BodyMetrix:

http://www.amazon.com/BodyMetrix-Personal-Ultrasound-Body-Co...

Yes that's the one he has (I'm his roommate)

Oh hey I referenced your guide on Jekyll when I was setting up my own blog last year. ( thanks :) )

I'm kind of surprised that both of you are living in a roommate situation. How did you guys know each other?

Always kind of knew of his work online for years. He eventually moved to SF a few years back. I wanted to hire him for my startup at the time but couldn't afford him, but we hung out a lot and eventually got a place with another friend

Would be nice if someone could make an arduino/pi one :) off to hackaday to have a look. $495 is a bit steep for me.