Want Some Suggestion for my new Developed Android App.

Hi Friends
Give Some suggestion for my new developed Android App (I Rail inquiry) for Indian Rail Users.
I want to make it as one of the best Android App in this categories.
Personal request “Rate 4/5 star”
Check the app and replay please -

https://play.google.com/store/apps/details?id=com.tsunayna.irail&hl=en