I don't wanna give this app one star also but If i giv one star then only I can write review,this app is very bad for only one class it is taking 702.MB and my daily data is 1.50 GB for only one class it is taking 702.MB means so, I can't attend another class and my class timing are only 30 minutes for 30 minutes it is taking that much MB means how? Please solve my problem.