I was glad to find this app on the iTunes App Store for both Apple TV & iPhone, but was a bit disappointed to discover that although the picture quality is significantly-better than it is provided by Spectrum cable on one of their channels, unfortunately the Apple TV app doesn’t support fast-forward or rewinding using the Apple TV remote (the pause, volume buttons and mute functions as expected). Worse, exiting the program stream means the user has to start over from the beginning of the stream (it doesn’t remember where you exited the stream); this makes it impractical to use.Out of curiosity, I downloaded the iPhone app, and although it supports Chromecast in app (& iPhone app allows fast-forwarding and rewinding), the video quality is significantly worse than when watching with the Apple TV app. And although the iPhone iOS app supports Chromecast (which I have on my TV), surprisingly it doesn’t offer or support Airplay (which obviously is the preferred choice for Apple TV).The NHK app strikes me as a good app, but as if the developers lost interest in Apple support, so they failed to add even basic features to make it useable.