CartChkr compares your grocery cart between Woolies and Coles, then moves everything to the cheaper store — in one click.
Free to install · Founding lifetime access from 99¢ · Chrome extension
No accounts. No price checking. Just open your carts and let CartChkr do the rest.
Add items to your cart on Woolworths or Coles as you normally would. Log in to both stores — CartChkr works with your existing sessions.
Open CartChkr from your Chrome toolbar and press Scan. It checks every item against the other store's live prices — takes about 10 seconds.
See your total savings instantly. Transfer your whole cart — or cherry-pick items — to the cheaper store in one click. Done.
Scans every item in your cart and shows total savings, including specials and multi-buy discounts.
Transfer your whole cart — or cherry-pick items — to the cheapest store with a single click.
See which items are cheaper, the same, or pricier at the other store. Full transparency.
Start from Woolies and compare to Coles, or the other way around — whichever suits you or saves you the most.
All price comparisons happen locally in your browser. Nothing is sent to our servers.
CartChkr uses your existing Woolies and Coles logins — we have zero access to your credentials.
We don't store, log, or transmit your cart contents or purchase history. Ever.
CartChkr never runs on payment or checkout pages. Your payment details are completely out of scope.
CartChkr pays for itself the first time you use it. Most shoppers save $15–$25 per weekly shop.
All prices in AUD · Payments via Stripe (secure) · Cancel monthly anytime
Yes — CartChkr scans the prices you see when you're logged in, so member discounts and specials are factored in automatically.
No account, no email sign-up. CartChkr uses your existing Woolies and Coles logins — it reads the prices your browser already has access to.
No. Everything runs locally in your browser. We don't see your cart, your purchases, or your payment details. Ever.
CartChkr shows those items with a "no match" label so you can decide what to do. Nothing is silently dropped from your cart.
Both ways. Start at Woolies and compare to Coles, or start at Coles and compare to Woolies — whichever is cheaper wins.
Lifetime means you pay once and use CartChkr forever ($3.99 total, or 99¢ founding). Monthly is $2.99/month, cancel anytime — and gets early access to new store integrations as we add them.
Founding members lock in full access forever at 99¢, no matter what the price becomes. You'll always be first to get new features.
Google Chrome — including Brave, Edge, and other Chromium-based browsers. Firefox support is on the roadmap.