Checkout Rules

Hide, rename, and reorder payment methods and shipping options at checkout, with rules you can test before you publish.

Install it from the Shopify App Store, then open it from your Shopify admin under Apps.

Payment rules. Hide Cash on Delivery on large orders or PO Box addresses, rename methods to show fees, and put your preferred method first.
Delivery rules. Hide Express for heavy carts, limit local pickup to your region, and nudge buyers toward your free-shipping threshold.
Test before you publish. The built-in rule tester runs your rules against a mock cart, so you see exactly what checkout will show before a buyer does.