The reason I ask what you will be using it for is to determine which set of features you need. If you're going to be using it for simpler activities, don't go all out for a Black edition with a 60fps, 1080p cam (all HERO3's are 1080p, anyways). The reason the Black Edition is so expensive is because of the crazy quality it has, and if you're using it for a more simple basis I wouldn't worry about the difference. The Silver or even White is perfectly fine for you. The main difference between these two is the white's camera has a 5 megapixels with 3fps burst while the silver is 11 megapixels with a 10 fps burst -- is that worth $100 to you?
What GoPros are compatible with the app?
A. Not without some extra gear. All GoPros have a waterproof rating that’s expressed as a depth; for example, most of them are rated as waterproof to ten meters, meaning you could swim about 30 feet down with your GoPro camera and it would still work. However, some users want to push those limits even farther, and for them, GoPro makes the “Super Suit,” a reinforced plastic housing designed to withstand water depths to 60 meters. If you’re shopping for equipment for deep-sea photography, plan on getting a Super Suit for your GoPro.
What is a good GoPro?
Few GoPros have the underwater capabilities of the Hero 4. This diving camera works wonders at a range of depths, thanks to the numerous compatible accessories and strong interior technology. Unlike similar models, this camera can go down a staggering 131 feet underwater. There, you can capture crisp videos with the 4K30, 2.7k60, 1080p120, and 720p240 options. The 12MP resolution reaches 30fps as well.
But it’s not only the lens lending credit to the impressive video GoPros capture. GoPro’s new Hero6 Black captures 4K video at 60 frames per second (fps) and Full HD 1080 at up to 240 fps. This isn’t just impressive for such a small camera — few interchangeable lens models have achieved 4K/60, with the $2,000 Panasonic Lumix GH5 being the first. As for still photography, the Hero6 shoots 12-megapixel images with features such as WDR (wide-dynamic range, GoPro’s lingo for high-dynamic range or HDR) and RAW file capture. And a new image processor — a first for GoPro cameras — helps improve performance and image stabilization. GoPro has managed to put all of this into a camera that’s not much larger than most DSLR batteries.