I use the app now for 10 days (on Kindle Fire HD 7 and Kindle Fire HDX 8.9 on), and it runs like clockwork. Each station that I choose, immediately appears and is in good quality (though mostly not in HD) rendered smoothly. The surround sound for movies on the Kindles (with headphones) is simply stunning! Only the Back Find out playing in the channel list required some practice, but also works satisfactorily. And there are a plethora of channels, I have not even be able to try them all! TV to go, how you want it. Now I only hope that the whole thing continues to be free!