Quick purchase is an application made for you to make your shopping list on your phone so you don't forget to buy something. In addition, you can record the price of each thing and keep track of how much you will spend on that purchase.

You can save multiple lists, to use over and over again, as many times as you want.
Also, if while shopping you happen to buy something else that was not listed, you can add it without problems.
Do you need to close the application? No problem, Quick Purchase saves all the information of your current purchase, and will only uncheck the purchase once you indicate that you have completed your purchase, to have your list available for a future purchase.