Most people buy roughly the same things. The milk, the bread, the coffee, the one brand of pasta sauce that nobody in the house complains about. You already know what is in that shop — what you do not know is where it is cheapest this week, and that changes constantly.
A cart answers "what does this cost right now". A shopping list answers the question you actually ask on a schedule: what does my regular shop cost this week, and has it moved?
Weekly shop
ProYour shop
11 items
$52.90
3 items are cheaper at Woolworths — save $4.10
Worth it if it's on your way. Nothing changes unless you say so.
Worked out fresh from each retailer's listed prices every time you open it — save the list once, ask again any week.
Making one
Two ways in, and they suit different moments.
From a cart. Build a cart the way you normally shop, open the cart tray and press Save this cart. Give it a name — "Weekly shop", "Fortnightly big one", whatever you will recognise in six months.
One product at a time. On any product page there is an Add to a list control beside the heart and the alert bell. Building "the weekly essentials" gradually, as you think of things, is at least as natural as building it in one go.
A list holds up to 99 items, and you can keep 25 lists.
One thing that surprises people
A cart holds a retailer's row — "Coles Heinz Baked Beans 300g". A list holds the product — "Heinz Baked Beans 300g", with no shop attached.
That is deliberate, and it is the whole reason the feature works. If a list remembered that you picked the Coles one, we could only ever quote you the Coles price, and the question "where is this cheapest now" would be unanswerable.
It has one visible consequence: if your cart happens to hold the Coles row and the Woolworths row of the same product, they become one line on the list, with the quantities added together. The confirmation says so when it happens — "13 cart lines saved as 12 items" — so you are never left to discover it by counting.
What the plan tells you
Open a list and the panel at the top is the answer:
- Your shop — one store: whichever prices the most of your list for the least money, and what that part comes to. Often that is the whole list; when it isn't, the panel says how many items the total covers.
- A second stop, if it pays — how many items are cheaper elsewhere, where, and what that saves.
- Anything nobody can price — listed by name, never just counted.
Every figure is worked out fresh when you open the page. Nothing is stored, because prices move weekly and a saved total would be wrong within days while still looking authoritative.
Why one shop is the default
This is the one design decision worth explaining, because it is deliberate and it is the opposite of what a pure optimiser would do.
When splitting a shop between two chains pays at all, it usually means moving a handful of items for a few dollars — not half the basket. Whether that is worth a second stop is not a question about prices. If the other shop is in the same centre it is a five-minute walk and obviously worth it. If it is across town it is obviously not. We cannot see which one you are looking at, so we do not decide. The list assumes one shop, tells you exactly what the second stop would involve — how many items, which ones, how much — and leaves the decision where it belongs.
For the same reason there is no setting where you tell us how many dollars make a detour worthwhile. That number is the price of your time, and it is not ours to guess.
Similar items
Some products only have a price at one chain — usually because we have not matched them across chains yet, not because the other shops do not stock them. Where we know a close match — a similar product, not the same one — the plan offers it rather than quietly using it:
Save another $1.80 with similar items. For 3 items we know a close match — a similar product, not the same one.
Off by default, always. Being quoted for a basket you did not choose is the kind of thing you discover in the aisle holding the wrong jar. You can accept swaps for a whole list, or item by item, and turn them off again whenever.
This matters most for Aldi, where the shelf is mostly Aldi's own brands rather than the same branded products the other two carry — so an Aldi price usually reaches your plan as a close match, offered as the similar product it is rather than counted as the same one.
Where we say "we've only matched this at Coles"
You will see that phrasing rather than "only at Coles", and the difference is not pedantry. A gap in our data supports a claim about us. It does not support a claim about what a supermarket stocks — they may well sell it, on a shelf we have not managed to line up with theirs yet. When a chain prices almost nothing on your list, we show no total for it at all, because a $6.30 figure against one of fourteen items reads like a cheap shop when it is really a gap.
Sending a list to a trolley
If you have the Grovena extension for Chrome on a computer, each leg of the plan gets its own Send button — eleven items to Woolworths, three to Coles.
Two legs are two separate pushes, never one. You press each one, and you see what happened to each one. Aldi has no online trolley of any kind, so an Aldi leg becomes a checklist you can tick off in the shop.
When you cancel
Your lists stay — every item and quantity, exactly as you left them. You can still open them and still delete any you do not want. What pauses is the weekly re-pricing: the totals, the where-to-buy plan, and editing, until you are back. Nothing is deleted for lapsing, and nothing needs restoring when you come back.