It is a wonderful app you can do study on it if you don't no any some just contact us we will help you
we can ask doubts and we will get the answers after some time
really its a good app
you should have seen the benefits before download it
kha rehte ho bro
haha mods do not spam delete spam questions and i saw ur previous question was not at all related to studies or "good humanitarian".plz refrain from posting irrelevant.