Best free Payment Customizations powered by Functions Shopify apps in 2026 [Updated]
PickYourApp Review Team
6 min read
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Oct 14, 2025
The Best Free Shopify payment customization apps powered by Functions let merchants take precise control over their checkout experience. From hiding and renaming payment methods to implementing COD fees and address validation, these apps solve common payment challenges without any cost. Whether you need to customize payment options by country, add OTP verification for COD orders, or validate customer addresses, these Function-based solutions help reduce failed deliveries and create a smoother checkout process tailored to your business needs.
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#1. Control payment, shipping, and discounts with checkout rules for a cleaner, dynamic checkout flow.
SMART Checkout Rules gives you complete control over your store's checkout experience through customizable rules and conditions. Set up dynamic rules to manage payment methods, shipping options, and discount applications based on specific criteria like customer tags, countries, cart value, or products. Merchants can hide, block, sort, or rename checkout options to create smoother purchase flows. Perfect for handling high-risk transactions, implementing B2B checkout logic, and managing international orders - all without coding. The app helps create cleaner checkout experiences by applying smart rules for payment methods, shipping rates, and order validation, leading to better conversion rates and more efficient order processing.Install from Shopify App Store
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#2. Hide, sort & rename checkout payment methods based on rules like country, cart value, or shipping.
Take control of your Shopify checkout payment options with ETP Sort & Hide Payment Methods. Customize how payment methods appear by hiding, sorting, or renaming options like PayPal, credit cards, Cash on Delivery (COD), and manual payments. Create specific rules based on shopping cart value, shipping method, customer location, product SKUs, or customer tags. The app lets you show only relevant payment options to different customers without any coding needed. All changes apply instantly to your checkout, making it easier for customers to complete their purchase with their preferred payment method.Install from Shopify App Store
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#3. Charge custom fees for COD, link COD payment to shipping, or hide COD based on set conditions.
ACOD Cash on Delivery helps merchants manage their COD payment options with precision and flexibility. Set custom fees for cash on delivery orders and connect COD payments to specific shipping methods of your choice. You can show or hide the COD payment option based on various conditions like shipping destination. This practical app gives you complete control over when and how customers can use cash on delivery, making COD management straightforward and organized. Perfect for businesses looking to offer cash on delivery while maintaining control over their payment settings and customer experience.Install from Shopify App Store
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#4. Create advanced functions for discounts, payments, delivery, and cart & checkout validations.
Create advanced Shopify Functions for your store without writing any code. This easy-to-use script editor helps you build custom discount rules including tiered pricing, BOGO offers, and bundle deals. Set up automated payment methods, delivery options, and checkout validations with a simple interface. Whether you need volume discounts, promotional offers, or specific cart rules, you can design them all through our no-code solution. The app works with all Shopify plans and makes it simple to migrate your existing Shopify Scripts to Functions. Take control of your store's pricing and checkout experience with flexible tools that match your business needs.Install from Shopify App Store
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#5. Ensure accurate customer addresses and reduce delivery issues with SMART Address Validator.
SMART Address Validator helps prevent delivery errors by checking and validating customer shipping addresses in real-time. When customers enter incorrect or incomplete addresses, the app catches these mistakes before orders are shipped, reducing failed deliveries and costly returns. Perfect for businesses dealing with frequent address mistakes or shipping to complex delivery areas, this address validation tool ensures packages reach their intended destination. By confirming address accuracy during checkout, merchants save time on order processing while improving customer satisfaction through reliable delivery service. The app works seamlessly with your existing order fulfillment process to maintain smooth shipping operations.Install from Shopify App Store
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#6. Customize your Thank you and Order status pages. Only Shopify Plus merchants can customize checkout.
Take control of your Shopify Plus checkout experience with customizable content blocks for Order Status and Thank You pages. This app lets Plus merchants create custom checkout flows with additional fields, personalized discounts for orders and shipping, and address validation requirements. Manage your delivery and payment methods by hiding, renaming, or reordering them to match your store's needs. Design a seamless checkout process that aligns with your brand while maintaining Shopify's reliable functionality. Note: Checkout customization features are exclusively available for Shopify Plus merchants.Install from Shopify App Store