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Best Payment Customizations powered by Functions Shopify apps in 2027 [Updated]
PickYourApp Review Team
6 min read
•
Aug 21, 2026
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.
| Name | Rate on Shopify | Price | Free trial | Key features |
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#1. Validate checkout, add payment, shipping & discount rules, checkout blocks & post-purchase upsells
SMART Checkout Rules & Upsells gives merchants complete control over their checkout experience with flexible validation rules and customization options. Hide, block, sort, or rename payment methods and shipping options based on conditions like customer tags, country, cart value, products, or discount codes. Perfect for managing high-risk orders, blocking COD or specific payment methods like PayPal and Credit Card by customer criteria. Grow your average order value with one-click post-purchase upsells and downsells that appear after checkout. Add checkout blocks including banners and discount codes with conditional display rules. Apply checkout validation and discount logic based on cart total, customer tags, or delivery method. Ideal for B2B stores, international shipping flows, and merchants who need advanced checkout control without coding. Control your checkout rules and increase conversions with smarter upsell strategies. -
#2. Reduce RTO COD, Verify COD via OTP, Offer split payments upfront, add fees or convert COD to prepaid
COD King helps reduce RTO and fake COD orders through OTP verification via SMS or WhatsApp. Verify customers before confirming orders, collect partial payments upfront to secure genuine orders, and add COD fees to encourage prepaid conversions. Control COD availability with flexible rules based on location, cart value, or specific products. Convert COD to prepaid orders by offering discounts. Send branded notifications to customers and recover abandoned carts. Track your performance with built-in analytics to improve cash flow and maximize profits while reducing return-to-origin losses. -
#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. -
#4. Checkout rules and checkout to power checkout customizer an boost your checkout conversion rate.
Blockify Checkout Customizer helps you set up checkout rules and customize your checkout page to increase conversion rates. This app lets you validate carts and addresses, enforce order limits, and manage payment and shipping options with ease. Hide, reorder, or rename checkout elements to reduce customer confusion and create a smoother experience. Use checkout rules to prevent spam and risky orders while protecting your revenue. The app includes post-purchase upsell blocks to lift your average order value. Perfect for both B2C and B2B stores, Blockify offers checkout extensibility functions that let you tailor discounts, payment methods, and shipping rules to match your business needs. Customize your checkout form and apply refined rules to control the entire checkout experience and stop fake orders before they happen. -
#5. Set COD fees & rules. Collect Partial, Split & Deposit Payments. Verify COD Orders with WhatsApp OTP
Releasit COD Fee helps you manage Cash on Delivery payments by adding COD fees or discounts based on conditions like country, product, collection, customer group, or order value. The app includes WhatsApp OTP verification to confirm orders before checkout, helping you block fake COD orders, reduce fraud, and lower RTO rates and failed deliveries. Accept partial payments, split payments, or deposit payments upfront with fixed or percentage amounts. Track each payment by date, method, and amount while showing customers their paid and due balances. Set conditional rules to enable or disable COD options based on your business needs. The app supports multilingual checkout text and offers fast setup to start collecting COD payments securely. -
#6. 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. -
#7. Say goodbye to irrelevant payment options and costs with HidePay. Hiding, sorting & renaming easier.
HidePay gives you complete control over payment methods in your Shopify checkout process. You can hide, sort, and rename payment options based on multiple conditions including products, customer groups, geography, and cart details. The app helps reduce unwanted chargebacks and shipping fees that often impact merchant profits. For Shopify Plus stores, you can disable PayPal Express, while all merchants can hide Express Checkout buttons. Built with Native Shopify Functions, HidePay ensures fast, seamless integration with your store. The app makes checkout more relevant for customers while protecting your business from unnecessary costs. Get support through email, chat, online resources, and social media channels whenever you need help. -
#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. -
#9. Create advanced functions for discounts, payments, delivery, and cart & checkout validations.
Create advanced Shopify Functions for discounts, payments, delivery, and checkout validations without coding. This app helps you build tiered discounts, BOGO functions, bundles, volume discounts, payment customizations, and delivery customizations using a simple no-code function creator. Perfect for migrating Shopify Scripts to Functions in just a few clicks. Works on all Shopify plans - no Plus plan required. Build custom discounts, flexible promos, and checkout rules with an easy script editor alternative. Control your checkout, apply bulk discounts, and automate offers. A complete Shopify Scripts replacement solution with active maintenance to help you create cart and checkout validations, discount functions, and payment rules. -
#10. Charge custom fees for COD, link COD payment to shipping & hide Cash on Delivery by conditions
ACOD helps merchants manage cash on delivery payments with custom COD fees at checkout. Link COD payment methods to specific shipping options and hide Cash on Delivery based on conditions like shipping country, order total, pin codes, states, products, or customer tags. Control which customers see the COD option to prevent fake orders, reduce RTO rates, and encourage prepaid payments. Charge extra fees for COD orders, limit availability by location or customer segments, and manage COD transactions without coding. Perfect for stores wanting better control over their cash on delivery options while reducing fraud and return-to-origin costs.
