With bi check, you can check how much you spent while shopping and how many you bought.
After shopping, you can match it with your invoice and check whether the amount is correct.
You can save the products and prices of your shopping either manually or automatically with your camera.
You can look at past bills. You can also search for which product you bought in the past and how much you can follow the price changes.
You can create your own shopping list. You can observe your estimated prices and the amount of shopping and you can check your list quickly.