I do not know if I've done something wrong, anyway, this app has worked on my Kindle Fire HD only once, immediately after purchase and installation. And even there really only uninteresting programs could be called. Then they no longer started. Perhaps it is because on my device no Flash Player is installed. But my Tablet running otherwise fine, and I was not interested enough to upgrade it to another, perhaps virus vulnerable apps just for a little zapping around. So I deleted US TV. Two stars, because it is free and with a bit of commitment would probably be up and running ...