Smart List is a shopping list with personal price insights.
To add items to the Smart List, swipe right on an item from the Items tab and tap on the cart icon.
The Smart List tab (below) initially shows the list of items you've added so far. Each item is a 'card' with the item name and (in the sub-title) you will see the quantity and price per unit which multiplied together equals the total price. The price per unit shown here in the sub-title is the lowest price from any of the prices you have previously entered.
Each item card can be expanded by tapping on it or removed from the list by tapping the green 'x' button. When expanded you'll see the lowest price for each store and when that price was recorded. By tapping on this list of prices you will be taken to the item detail page, which shows all prices entered for the item.
You can also quickly change the quantity by using the slider. Or if you have a specific quantity to enter tap on the corresponding number to directly edit it.
The Store Total view shows a card for each store with the total cost of the items in your Smart List. Each item that has a price at the store will be listed on the store card. Note that you may not have a price for every item at every store so the sub-title will show a quick count (ie. '7 of 10 items') to help you compare stores' total prices. The selected quantity from the Smart List Items view is used to calculate the total for each store.
Lastly, the Lowest Price view again shows each store but pairs each item in your Smart List to the store with the lowest price. This way if you plan to visit multiple stores you know which items to buy at each.