its there on the market and i used it on my hiapad m701r and it work but video didnt work to the computer but then i tried it on my droid incredible and the back camera showed up on the computer. so what i think is with two devices running on the same wifi network it might not let the video stream, just an idea i havent had time to test it yet
Not for the S7. Look on the website it isn't availablefor the S7. I've looked on the market many times so don't tell me it's on there.