I am a student. I am online study lover. I use many apps for online study. I also used this app but the fun does not come in this app as the fun that comes from using other apps. I do not know how to do this, but that app is not good for online study. One day ago when me and my friend use this app for online study, then my cousin called me again and again for playing game. I call attended after that went to in this app, your phone is stopping then this massage come in my phone. I am very angry on this app because my study plane was stopped. I think it's needs further improvement because it has old version. If so you have 2 GB ram phone, then this app is not good for you because this the not good working in 2 GB ram mobile phone.