Read somewhere online that it was free to use this app to watch EPIX programming if you were a Spectrum internet subscriber (even without any cable TV plan) and sure enough, it works. It was easy to set up on our FireTV devices. We are 2 episodes into Perpetual Grace LTD which, so far, is a great new show. I see that there are a few other original series and some decent movies available also.
The app seems well-laid out and video quality has been good, with some occasional fuzziness when we first start a show - but it quickly ramps up to HD quality. I suspect that's more to do with our internet than the app itself.
If you have Spectrum internet, this is definitely worth checking out for the low, low price of FREE!