Kuantize is a free service that allows you to manage your shopping list with products and prices submitted by the users. Because Kuantize always shows the current lowest price of the products, the user can do a better choice when buying groceries. With the increasing number of users, there's more and more products added each day.
To manage the shopping list you can read the product barcode, making it easier for you to add or remove products from the list.
There's the Opportunities and Campaigns sections to inform you about the current campaigns and opportunities. Kuantize also allows you to manage your stock by reading the barcodes.

Because this is a service, you need to have an account, easily created in the login screen by introducing your email and the desired password.