Shopify app

Checkium

Control what your customers see at checkout. Hide, rename or reorder payment methods and delivery options with rules you write yourself — no code, no developer.

Open the live app See how it works

What it looks like

Screenshots from the working app.

The Checkium dashboard listing the payment and delivery rules of a store — The dashboard — every rule for payment methods and delivery options in one list, each one switchable on or off.

The rule editor, choosing an action and the conditions that trigger it — The rule editor — pick what to do, then add the conditions that trigger it.

A Shopify checkout page where the rule has been applied — The result on a real Shopify checkout: the rule has been applied to what the customer can choose.

How a rule works

Every rule is one action plus the conditions that must match.

1. Choose the action

Hide the method, rename it, or move it to a different position in the list.

2. Pick the target

Match a payment method or delivery option by name — "name contains" or "name is exactly".

3. Add conditions

Require all conditions to match, or any of them. A rule with no conditions always applies.

The 11 conditions

Cart

Cart total
Cart subtotal (before tax)
Total items in cart

Customer & destination

Shipping country
Checkout currency
Customer is logged in
Customer email

Products & shipping

Selected shipping option
Product vendor in cart
Product type in cart
Product or variant ID in cart

Numbers compare with is at least / is at most; lists with is any of / is none of; text with contains, is exactly, starts with, ends with and their negatives.

Examples you can build

Hide Cash on delivery when the cart total is at least €300.
Hide express shipping when the shipping country is none of Italy, France, Spain.
Rename Standard to Free delivery (3–5 days) when the cart total is at least €50.
Move Credit card to the top when the customer is logged in.

How it is built

Admin app

Remix (React Router) with Shopify Polaris and App Bridge, embedded in the Shopify admin.

Checkout logic

Two Shopify Functions in TypeScript — payment-rules and delivery-rules — that run inside Shopify's own checkout.

Data & hosting

Prisma for sessions and rules; deployed on Render; scopes limited to payment and delivery customizations.

Trying it yourself

Checkium is an embedded Shopify app, not a normal website. It runs inside the admin of a Shopify store, so opening its address in a browser only shows a sign-in screen — there is nothing to browse without a store. That is why this page exists: it shows what the app does. The app itself is live at checkout-rules-2ge8.onrender.com (hosted on a free plan, so the first request can take up to a minute to wake up).