Just want a simple app that is a form with just one field.
When you select the app icon a form opens up with just one line filed and a submit button. Enter the text into the field then select the submit button and the information is added to a text file in the form of a list. In other words each new entry is added to the bottom of the list.
Another desktop has a password protection and when the password is entered correctly it deletes the content of the file leaving the file empty.