Smarters is usually a paid front end because you need to sign up sort of thing. Free you need a Kodi build or a kodi fork. Or you can use perfect player, Plex, There are lots to choose from which are free. even mx player works. all you need is a M3u file which you can download for whatever country you want. Really though try to get an auto updating file. Personally though i think i would prefer installing a kodi build. If you look on you tube you can see lots of them.