It functions as a shopping memo to prevent you from forgetting to buy something, as well as calculating the total amount and points to be earned.
Main functions
* Automatic calculation of the total amount and points to be earned
* Set the consumption tax rate for each product.
* Compare and display prices of the same product in each store.
Examples of use
* As a shopping memo
* To record what you have bought so far
* To keep track of prices and lowest prices during sales
