Its a great app to use but in the composition with WhatsApp it may not survive. But the Google Assistance is just awesome. In my opinion it bears any other artificial intelligence such as Siri or Cortana for smart phone. Its allows you to change the size of text as it may show the intention of the sender that what he/she actually mean to say. It also provide succession to your habit reply. Graphical User Interface is great but can be improved.