Well My exprience on hotstar is the best well its be an year or half I am using hotstar and its the best.
First its about 31 mb so takes less space after about 20 skips you have yo sign in using facebook or gmail and enjoy.
It contains various serials and movies from star channels.
You can also enjoy live sports on hotstar and chat with friends while doing so.
Hotstar has a vast set of webseries also known as hotstar orignals and contains fablous stories to checkout.
Hotstar plays video on 3 mod and usage of data can be shown in the side of video quality you want to play.
Thus making it easier for user to chose the sutiable video quality