I want a simple to Do List App

Directions
Your application shall satisfy the following requirements:

The application shall be able to manage at least 100 unique todo lists

A todo list shall have a title
A todo list shall have the capacity to store at least 100 unique items

An item shall have a description
An item shall have a due date, formatted as YYYY-MM-DD

A user shall be able to add a new todo list

A user shall be able to remove an existing todo list
A user shall be able to edit the title of an existing todo list
A user shall be able to add a new item to an existing todo list
A user shall be able to remove an item from an existing todo list
A user shall be able to edit the description of an item within an existing todo list
A user shall be able to edit the due date of an item within an existing todo list
A user shall be able to mark an item in a todo list as complete
A user shall be able to display all of the existing items in a todo list
A user shall be able to display only the incompleted items in a todo list
A user shall be able to display only the completed items in a todo list
A user shall be able to save all of the items in a single todo list to external storage
A user shall be able to save all of the items across all of the todo lists to external storage
A user shall be able to load a single todo list that was previously saved to external storage
A user shall be able to load multiple todo lists that were previous saved to external storage

Application shall compile in Gradle

Project needs to be completed in 3 days