Bangla Calendar India is similar to your traditional wall calendar and it works in your phone. Here you will get all the necessary information about the Bengali era , date , month in one place. And for the current year you will get tithi, nakshatra and related timing details on a day to day basis.
As you are aware , In West Bengal , India people mainly follow two different types of Pnajika . The Surya Siddhanta and the Drik Siddhanta. In this application you will get both of them , so that you can choose your favorite Panjika.