Android App Inventor tutoriales

This tutorial covers some interesting points.

The idea is simple , for this shopping list app , we  have 3 screens, in one we create the shopping list using textbox and tinyDB then this list "creates" in screen2 a group of CHECKBOXES, these check boxes are the ones we use while buying at the market, then when we check the checkboxes jeje they make 2 lists for a shopping list report and pass this report to Screen3 , the report says which item we buy and wich ones we couldn't get. 

Also I add an extra feauture, I add a simple calculator to help us while buying to know how much are we spending.  have a nice weekend guys .