Package-related services
Merchants define what an optional service includes, how it is fulfilled, and the terms customers see.
Optional cart add-ons for Shopify
One switch. One clear choice before checkout.
Show a clean order summary with a simple switch for an optional add-on, like gift wrap, priority handling, or a service you provide. Shoppers see the price, switch it on, watch the total update, and continue to Shopify Checkout.
Shopify-managed subscription · no per-order fees · no revenue share
Try the switch. Illustrative example.
How it works
Buyer chooses before Shopify Checkout
The add-on starts switched off. CartArmor adds it to the Shopify cart only when the buyer switches it on, and removes it when they switch it off.
Checkout
Shopify
CartArmor fee
No revenue share
Theme integration
Theme app extension
Offer examples
Merchants can configure an optional product or service. They set its price, terms, and fulfillment.
How it works
Set it up in three simple steps.
Choose what you want to offer, match the card to your brand, and turn it on for your cart page or drawer. CartArmor handles the switch and shows you the results.
01 / CHOOSE WHAT YOU SELL
Create a cart-only product, or use something you already sell.
You can create a dedicated product or select an existing Shopify variant. Review its product visibility and storefront settings before offering it.
Option 1: Unlisted productUse a dedicated product for a merchant-defined service or add-on, with clear product details and terms.
Option 2: Existing Shopify productUse an item or variant you already sell, such as a sample, accessory, or lower-priced complementary product.
Ten styles
Make it look like your store.
Pick a style, edit every line of text, and watch the preview update as you type. Merchants set the product, price, description, and fulfillment. Nothing is added to the cart until the shopper switches it on.
Illustrative example. Tap a style, then try the switch.
Your workspace
Everything in one calm, simple workspace.
CartArmor combines a cart offer with controls for its product, buyer-facing copy, style, theme placement, and aggregate activity inside Shopify.
Live offer controls and storefront status
Revenue and attach-rate reporting
Ten visual styles with a live preview as you edit
Optional estimated ship date, counted in business days
Normal Shopify line items and preserved cart state
Use cases
Whatever you would offer at the cart.
CartArmor displays a merchant-selected product or service before Shopify Checkout. The merchant sets its price, terms, claims, and fulfillment.
Gift presentation
Offer a merchant-provided gift wrap or message option as a separate Shopify product.
Priority handling
Describe any handling service accurately and fulfill it under the merchant's stated terms.
Packaging options
Let buyers choose a packaging add-on when its details and price are clear.
Accessories or samples
Use an existing Shopify product or a dedicated product for an optional cart add-on.
Other merchant-defined offers
Merchants are responsible for product claims, delivery, customer support, and applicable legal requirements.
Simple pricing
One flat plan. No CartArmor revenue share.
Shopify displays the current subscription price and billing terms before installation. CartArmor's 14-day access trial starts at first install and is limited to one while the store's trial history is retained.
$0 per-order fees
0% revenue share
Shopify payment fees may apply
One flat plan
One Shopify-managed plan.
Reinstalling or approving a later Shopify trial does not restart CartArmor access. Trial history is deleted when Shopify's required shop-redaction process runs, so it cannot be retained to block trials permanently.
Trial resetReinstall won't restart it while history is retained
Order-based billingNone
Per-order feesNone
Revenue shareNone
Install through the Shopify App Store · cancel anytime · no code changes to your theme
App features
Built to earn its place in your stack
Your offer, customer choice, additional revenue, and performance reporting all stay inside one Shopify-native workflow.
Offer typesPackage services, gift wrap, priority handling, custom
StorefrontCart page and compatible drawers
ReportingRevenue, orders, attach rate
Built on trust
Clear choices, and Shopify Checkout stays Shopify.
The product is designed around explicit customer choice, Shopify-native primitives, and the smallest practical permission surface.
Nothing is added unless the shopper switches it on.
Accepted services continue through Shopify as normal cart items.
The integration ships through a Shopify theme app extension.
CartArmor works before checkout and does not replace Shopify checkout.
For investors
A merchant product today. A broader cart revenue platform tomorrow.
CartArmor starts with a focused Shopify app for optional paid services. The investor brief covers the market thesis, a hypothetical model illustration, business model, and roadmap.
The wedge
Simple merchant value that is easy to measure
DistributionShopify App Store
Current modelSelf-serve B2B SaaS
Value createdOptional pre-checkout offer
The brief
Market, evidence, strategy, and roadmap
Review the full investment narrative separately from the merchant product experience.
Give shoppers a clear choice before checkout
Give shoppers a clear choice before Shopify Checkout.
Choose an optional service, match the offer to your store, and let customers decide before checkout.
Beyond Shopify
Need CartArmor on another ecommerce platform?
We can provide CartArmor for other ecommerce platforms, headless storefronts, custom stores, and static websites connected to a cart or checkout. Tell us what your site runs on and we will recommend the right version.
Ecommerce platforms
Headless commerce
Custom storefronts
Static websites