Meet the Harmony Ultimate Hub: a handy device, with a mobile app, that allows you to use your iOS or Android device as a universal remote. You can navigate TV, select your favorite channels, and do a whole lot more on your touchscreen device. You can control 8 devices with this system. In fact, over 225,000 devices are covered. It can also control Netflix/YouTube on your Apple TV, Roku, Amazon Fire TV, and other devices. As long as it is close to the devices you want to control, the Harmony Ultimate Hub can control devices hidden inside cabinets. Sets you back $99.