I am trying to build a membership website and/or mobile app to get users to sign up for a budgeting tool. Basic inputs would be: bill name, bill amount, date due. I want the user to be able to answer a notification or email to update their paycheck amount on the day they are paid. Basic function would be to update user with how much money they have to spend on things other than bills until their next paycheck with the option to update balance/spending daily. essentially a checkbook that is much easier to use and will show users how much they have until their next paycheck with the bills that are included between the dates.