Best Payment Customizations powered by Functions Shopify apps in 2026 [Updated]
PickYourApp Review Team
6 min read
•
Oct 15, 2025
The Best Shopify payment customization apps powered by Functions let merchants take precise control over their checkout experience. From hiding and reordering payment methods to adding COD fees and validating addresses, these apps provide essential tools for customizing how customers pay. Whether you need to show region-specific payment options, verify COD orders through OTP, or set up conditional checkout rules, this collection offers proven solutions to tailor your store's payment process while reducing failed orders and delivery issues.
-
#1. Customize checkout using powerful checkout rules to streamline and boost checkout conversion.
Customize your Shopify checkout experience with flexible checkout rules that help increase conversions. Control how shipping and payment methods appear based on specific conditions like cart total, weight, product tags, or customer location. Show, hide, rename or reorder checkout options to match your business needs. Set default shipping methods, restrict PO Box deliveries, manage express payment buttons, and apply targeted discounts. Create a smoother checkout flow by displaying only relevant options to each customer. Perfect for merchants who want to optimize their checkout process while improving customer satisfaction.Install from Shopify App Store
-
#2. 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
-
#3. 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
-
#4. Verify COD via OTP, Offer split payments upfront, add fees or convert COD to prepaid
Manage COD orders more effectively with OTP verification and partial payment options. This app helps reduce fake orders and returns (RTO) by confirming customer intent through SMS or WhatsApp verification. Collect split payments upfront to filter genuine buyers and secure order commitment. Add custom COD fees or offer prepaid conversion discounts to encourage advance payments. Control COD availability based on location, order value, or product type. With timely order updates and flexible payment options, you can improve delivery success rates and protect your COD revenue. Available for merchants in India and Egypt, COD King makes cash-on-delivery transactions more reliable and profitable for your store.Install from Shopify App Store
-
#5. Secure Cash on Delivery orders with WhatsApp OTP. Add fees, set rules, and reduce failed deliveries.
Secure your Cash on Delivery (COD) orders with WhatsApp OTP verification while managing delivery fees effectively. This app helps prevent fake orders by verifying buyer intent through WhatsApp before checkout completion. Set up flexible COD fees as fixed amounts or percentages to cover delivery costs and encourage prepaid payments. Create custom rules to control COD availability based on country, product type, collections, customer groups, or order value. The app supports multiple languages for OTP messages and checkout texts, making it accessible to international customers. Quick setup with detailed tutorials and responsive customer support via WhatsApp, Telegram, or email ensures smooth implementation for your store.Install from Shopify App Store
-
#6. Checkout rules and upsells with powerful checkout customizer to boost your checkout conversion.
Customize your Shopify checkout experience with Blockify Checkout Rules Plus. Set smart order limits, validate customer carts and addresses, and manage payment and shipping options without complex coding. The app helps prevent fraud and spam orders while offering checkout and post-purchase upsell opportunities to increase average order value. Whether you run B2C or B2B operations, you can create specific checkout rules to control what customers see and how they interact with your checkout page. Hide unnecessary options, reorder elements, or rename fields to reduce confusion and improve conversion rates. All checkout customization features work seamlessly with Shopify's native payment and shipping functions.Install from Shopify App Store
-
#7. Prevent checkout errors with address validation, checkout customization rule, and advanced shipping.
Ensure accurate order delivery with real-time address validation during checkout. This app validates both shipping and billing addresses instantly, helping prevent failed deliveries and order issues. Set custom checkout rules based on order value and shipping details, while controlling PO Box, USPS, and military address validation. Easily customize your checkout experience by reordering, renaming, or hiding fields to match your store's needs. The address validator integrates smoothly with Shopify checkout, letting you modify prompts and language to maintain your brand voice. Reduce checkout errors and improve order processing with reliable address verification and tailored checkout rules.Install from Shopify App Store
-
#8. Enable Taiwan Convenient Store Pickup shipping method and integrate e-invoice
Simplify your Taiwan e-commerce operations with this comprehensive solution for convenience store pickup, logistics, and e-invoicing. As the only Shopify Plus Partner in Taiwan, we integrate essential services including CVS pickup locations, HCT, T-CAT, and Chunghwa Post delivery options, along with electronic invoice management. Set different shipping rates for main island and outlying areas, automatically generate shipping labels, and send e-invoices directly to customers. This all-in-one app eliminates the need for multiple installations, making your store management more efficient while improving the shopping experience for your Taiwan-based customers.Install from Shopify App Store
-
#9. 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
-
#10. Rename, reorder, hide payment and shipping methods, validate block checkout page with few clicks
Customize your checkout experience with smart rules that give you complete control over payment and shipping methods. Easily hide Cash on Delivery (COD) options based on specific products, customer locations, or buyer profiles. Set payment rules to require prepaid transactions for international orders and manage gateway availability during sales events. Create shipping rules that consider order weight and delivery zones. Keep your business secure by setting minimum order values, preventing fraudulent COD orders, and implementing checkout validation to reduce risky transactions. Perfect for merchants who want reliable, well-managed sales with fewer payment complications.Install from Shopify App Store