Blockly
EmailCart totalCountryTags+ more
Custom validation rule
Build your own validation rule with full control over the conditions.
Coming soonTake full control of your Shopify checkout
Blockly Checkout Customizer is in final review on the Shopify App Store. Block risky orders, tailor shipping and payment options, add upsells and trust signals, and see exactly how checkout performs — all from one app, with zero code.
Rule triggeredZIP 90210 · order blocked
Upsell added Leather cardholder · +$89.00
How it works
Build your checkout, piece by piece.
- 01Rules
Validate every field
Block orders by ZIP, email, phone, address or cart contents with no-code rules that run on Shopify Functions.
- 02Methods
Reorder, rename, hide
Put the right shipping and payment options first, and hide risky ones like Cash on delivery when a rule says so.
- 03Components
Add what converts
Drop in upsells, trust badges, banners and custom fields — native checkout UI extensions, no theme edits.
Checkout rules
Pick what you'd like to control at checkout
Every rule runs natively on Shopify Functions — fast, secure and upgrade-safe.
Checkout validation
Block or restrict orders based on customer, cart, address, product and more.
Payment methods
Hide, rename or reorder payment methods when conditions are met.
Shipping methods
Hide, rename or reorder shipping methods when conditions are met.
Discount rejectionNew
Decline discount codes if the cart or customer doesn't meet your conditions.
Hide dynamic payment
Hide express checkout buttons such as Shop Pay, PayPal or Apple Pay on product and cart pages.
Checkout link
Build a direct checkout link with products, discounts and more pre-filled.
Checkout validation
Choose what to check before customers can place an order
Start from a ready-made template or build a custom rule from any combination of conditions.
Email address
Stop specific email addresses from placing orders.
Sculptural terracotta vasePetite This order doesn't meet the required order value
Order value
Decide which orders can proceed to checkout based on order value.
Shipping & payment customization
Show the right options to the right shoppers
Hide, show, reorder or rename methods — or discount shipping and add COD fees automatically.
Choose how shipping methods should change at checkout.
Shipping method
Standard (3–5 days)$5.00
Local pickupFree
Hide shipping method
Hide certain shipping methods when your conditions are met.
Shipping method
Standard (3–5 days)
Express (1–2 days)
Local pickup
Show shipping method
Show only the chosen shipping methods to customers who match your rules.
Shipping method
Standard (3–5 days)
Express (1–2 days)
Local pickup
Reorder shipping methods
Change the order of shipping methods to spotlight a delivery option.
Before
Standard
After
Standard (3–5 business days)
Rename shipping method
Change a shipping method's display name so customers understand it at a glance.
Shipping method
Express (1–2 days)$9.99$4.99
Standard (3–5 days)$5.00Free
Discount applied at checkout
Shipping discount
Lower shipping fees with discounts based on your own conditions.
Checkout components
Turn checkout into a conversion booster
Drop in upsells, trust badges, reviews, banners and custom fields — on checkout, Thank you and Order status pages.
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Leather cardholderProduct offerRecommended
Show targeted upsell offers to grow revenue.
Organic cotton T-shirtTerracotta / M ▾−2+Remove$50.00
Cart editorNew
Let customers change quantities or variants on the spot.
Free shipping
Easy returns
Money back
24/7 support
Trust badgeNew styles
Show trust badges to boost buying confidence.
JSJane S.★★★★★Verified
“Fast delivery and amazing quality. Will definitely order again!”
Testimonials
Show customer reviews to build trust and credibility.
Custom banner
Highlight promotions, shipping cut-offs or store policies.
The Linen EditUp to 30% off throws — this week only
Image banner
Add a branded image to promote collections or campaigns.
Delivery instructions
Gift message (optional)Happy birthday, Anna!
Custom field
Collect extra details like gift messages or delivery notes.
Tax & duties
No surprises at checkout
Show shoppers a tax estimate per country with your own message. It's informational only and never changes the order total — perfect for cross-border stores.
- Tax rates per country
- Custom message shoppers see at checkout
- Works on Checkout, Thank you and Order status pages
Estimated Tax OnShow shoppers a tax estimate at checkout.
Turn offCountries configured3Tax rates configured
Block added to3/3All pages live
Checkout pageAdded
Thank you pageAdded
Order status pageAdded
Checkout analytics
See where customers leave — and what your rules earn
Track conversion, revenue lost at checkout, AOV and the impact of every rule, upsell and custom field.
OverviewRulesUpsellCustom fieldsDemo data Last 7 days
Checkout conversion rate41.0%
Revenue lost at checkout$1,240
Average order value$68.20
Time to complete checkout2m 14s
Checkout started100% 4,820
Information78% 3,760
Shipping method64% 3,085
Payment method52% 2,506
Purchase completed41% 1,976
FAQ
Frequently asked questions
Everything you need to know about Blockly Checkout Customizer.
Still have questions?Our team replies to every email — usually within a few hours.Contact us
The app is currently in review on the Shopify App Store and will launch soon. Use the "Get notified" button and we will email you as soon as it is live.
Blockly is a Shopify app that lets you control what happens at checkout without code: validation rules that block risky or invalid orders, rules that hide, rename or reorder shipping and payment methods, checkout components such as upsells and trust badges, estimated tax display, and checkout analytics.
Checkout rules (validation, shipping and payment customizations, discount rejection) are built on Shopify Functions and work on all plans that support them. Checkout UI components on the information, shipping and payment steps require Shopify Plus; components on the Thank you and Order status pages work on every plan.
Yes. Start from a template — email address, phone number, shipping name, customer tag, product tag, order value, order quantity, products in cart, shipping address, PO box or ZIP code — or build a custom rule combining any conditions.
Yes. Create a "Hide payment method" rule and set conditions such as cart total, country, customer tag or product tag. You can also rename methods, reorder them, or add a COD fee.
No. Rules run as Shopify Functions on Shopify’s infrastructure and components are native checkout UI extensions, so there are no scripts injected into checkout.
The Analytics page shows your checkout funnel (started → information → shipping → payment → completed), conversion rate, revenue lost at checkout, average order value and the performance of each rule, upsell and custom field.
Coming soonBe first to try
Be first to try
Blockly Checkout.
Blockly Checkout Customizer is in Shopify App Store review. Tell us you're interested and we'll email you the day it launches.
- No code
- Built on Shopify Functions
- Checkout Extensibility