This app, when you happen to run a really small shop, Of course, POS is also well in these days, but when that is not possible, When people looking for a store come in and the price calculation doesn't go well, This app was created because I thought I could help a little. If there is nothing like the picture on the side and it is already registered by reading the barcode, It only provides such functions as showing the price right away, adding the number, and calculating the change when you rec