I want to build and app

I want and App
I want the App to have a login feature so every individual has there own account.
I want the app to dile a number same number and enter a pin a Unique pin that the individual must give the app.
I want the app to Recognize if the individual is scheduled to report that day.
And if the individual is scheduled I want the app to send the user a text message letting them know there scheduled.