CheckoutStackBanner
Title, body, four tones, collapsible and dismissible. The countdown is a real timer running in the buyer’s browser, not a static image of one.
Shopify checkout blocks
Know which checkout message wins.
Add banners, reviews, trust lists and images to Shopify checkout, then A/B test them against your own traffic.
Payment
Card number
Expiry
CVV
This is the block itself, rendered by the same code that runs in checkout. The countdown is really counting down.
Every other checkout app stops at “it’s live”.
You write a trust line, you ship it, and then you guess. Nobody can tell you whether the wording moved anything, because nothing was measuring the alternative.
CheckoutStack runs two versions of a block at once. Buyers are split at random, the split holds across every checkout step, and the app only calls a winner when the difference clears a real significance test.
We are not going to tell you a banner lifts conversion by 12%. We built the thing that tells you what it does on your store.
Returns banner
Example readout
A Free returns for 30 days
32.1%
412 of 1284 checkouts completed
B Free returns, no questions
36.0%
468 of 1301 checkouts completed
B is ahead. The winning label only appears once a two-proportion z-test clears, and rates stay hidden below 20 checkouts.
Four blocks. Nothing you have to learn.
Reviews
Stars, verified badges, customer photos and reviewer avatars, in three layouts.
★★★★★
Verified Purchase
Arrived two days early and the fit chart was accurate.
Trust list
Icon, headline, one line of copy. The reassurance list that belongs under the pay button.
FREE 30-DAY RETURNS
We cover the return label.
Image
Pick from your Shopify Files or upload one inside the app. Width, alignment, alt text, optional link. No CDN links to copy around.
Seven positions
Six of them render the moment you install.
No theme code, no snippet to paste, no support ticket that starts with “the block is not showing up”. The seventh you drag wherever you want in the checkout editor.
Under payment
Renders on every checkout. The default.
Order summary, under items
Beside what they are buying.
Order summary, under totals
Right where the number lands.
Above the shipping address
Before they commit to details.
Under shipping methods
Next to the delivery choice.
Thank you page
Works on every Shopify plan.
Custom position
Drag it anywhere in the checkout editor.
Show a block only when it earns its place.
Fifteen fields, matched on all or any. Rules re-check live from Shopify’s own signals, so a cart-over-$75 banner appears the instant the buyer crosses $75, and disappears if they remove an item.
How the rules engine worksThe cart
- Cart total
- Cart subtotal
- Number of items
- Product in cart
- Variant in cart
- Discount code
- Order note
Where they are
- Currency
- Shipping country
- Shipping state or province
- Language
- Market
Who they are
- Customer is logged in
- Customer email
- Selected shipping method
Checkout never waits on our servers.
No network calls to render
Everything a block needs travels inside one Shopify metafield that the app republishes when you save. Checkout reads it directly.
Blocks keep working during our outages
The rendering path does not touch our servers, so an incident on our side cannot take a block out of your checkout.
Live the moment you press save
No theme publish, no cache to clear, no deploy. Blocks you disable are stripped out of the payload entirely.
Pricing
Half the price of the closest alternative.
Free
$0per month
One block live at a time, with every block type, the live preview, display rules and countdown timers.
Install freePro
$25per month
- Unlimited live blocks
- A/B testing with a significance check
- Per-block analytics
- 14-day free trial, cancel any time
Before you subscribe: Shopify restricts checkout blocks on the information, shipping and payment steps to Shopify Plus. That is a platform limit and it applies to every app in this category. Thank-you page blocks work on every Shopify plan. What this means for your store
Put a block in checkout in the next five minutes.
Install, write your copy, watch the preview, save. The free plan does not expire and does not ask for a card.