I tried it on the iPhone 6, but apparently Apple limited the burst rate on the iPhone 6 to 10fps. According to the manufacturer it currently works best on the iPhone 5s. Read my full review here: http://filmkit.net/posts/show/5081/shoot-4k-on-your-iphone-the-vizzywig-...

I've written a review based on my first impressions: http://filmkit.net/posts/show/5081/shoot-4k-on-your-iphone-the-vizzywig-...