It is good app but their are some conditions to use this app ... If you dont do it then it is not possible to use app .. If you have any questions you can ask it easly but when you have question but you dont have anymore points ... So you are not visible to use this app ... And if you want points .. So you have give answers to some silly questions ... Then you get a point then u can ask quedtions regarding your doubt .... And thank you so much to read my whole review ......... thanks a lot .....