I tried it on an older Gen3 iPad. There was a huge delay in the video and the video would freeze a lot.
I picked up a Amazon Fire HD 10 for $99 (HSN sale). Loaded the Google App Store on it, then loaded StreamVision from the Google App store. Works great, especially having a 10" screen for that price. And still have my phone available for messaging my buddy in another blind. Used it tonight while pig hunting. There's a shelf above the window.