The best app to watch Live TV on android is Mobdro.
The app Mobdro is the most popular android app for watching live TV on android devices and it's what I use myself and it works great.
The Youtube app is also another great way to watch Youtube Live TV on your android device or even your Apple Device.
I also watch Youtube and Youtube Live TV on my television and it's worth the cost for Youtube Live TV.
Hulu App is another Good App along with Netflix App for watching live TV on your android or apple device or even watching Live TV on your TV.