Here are some apps you may find use full.

#1 tv app repo it's used for creating short cuts to put on your home page...(some apps will not appear in list to add to home page this will allow you to add it.
#2 enable live channels then install pluto tv ,red bull tv,and haystack tv you can get from google play (if used in the US
you can get up to 250 more channels of content with a tv guide mostly older content .
#3 if you have your own movie library install nova video player and you can link it to your library on your computer or router.you can install it from aptoide or play store
#4 aptoide tv its a good app market.
#5 Button remapper if you have the new nvidia and the new remote you can remap some of the buttons like if you don't have netflix you can use that button for your live tv or any other app you have installed.
#6 clean master 5.5.3 works the best.
#7 Analiti speed tester