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

Classic Brown · one of ten styles. Try the switch.

How it works Buyer chooses before Shopify Checkout

The add-on appears with its price and a simple switch. Shoppers can turn it on or off at any time, and the total updates instantly before Shopify Checkout.

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.
Illustrative setup for selecting a Shopify add-on product and setting accurate buyer-facing details
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
Illustrative dashboard fields for aggregate add-on revenue, accepted orders, and attach rate; values vary by store
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.

Services and extras

Setup, personalization, extended support, or any service the merchant provides under its own terms.

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

$9.99 a month. Keep 100% of add-on sales.

One flat plan with every feature. Start with a 7-day free trial, billed through Shopify, and cancel anytime.

$0 per-order fees 0% revenue share 7 day free trial
CartArmor plan

Everything included.

One price, no tiers and no order limits. Billed monthly on your Shopify invoice.

Monthly$9.99per store, billed by Shopify
OrdersUnlimited
Per-order feesNone
Revenue shareNone
ContractNone, cancel anytime

Install from the Shopify App Store · no code changes to your theme · Shopify taxes may apply

What you get

Built to earn its place in your stack

Your offer, its design, and its results, all inside your Shopify admin.

Offer typesGift wrap, priority handling, samples, services, custom
DesignTen card styles, every line editable
Live previewSee each change as you type
Ship-date estimateOptional, in business days
RulesBy tag, product type, or collection
StorefrontCart page and cart drawers
ReportingAdd-on revenue, orders, attach rate
SupportIn-app messages, email replies
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.

[01]Explicit customer choice

By default, nothing is added unless the shopper switches it on.

[02]Shopify-native line items

Accepted services continue through Shopify as normal cart items.

[03]No theme write scope

The integration ships through a Shopify theme app extension.

[04]Checkout stays Shopify

CartArmor works before checkout and does not replace Shopify checkout.

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