FREE from Tesco, the Grocery app means you can shop on the go. Simply download, log in and start shopping - all you need is to be registered at www.tesco.com/groceries/. You can then book a delivery slot, search for products or start a new order using 'Favourites'. Forgotten to add milk to your basket? No problem - you can amend your order and check out any time, night or day, wherever you are. And it all syncs seamlessly with your online order.