Customize Checkout UI extension with upsells, custom fields, and conditional shipping and payment
Transform your Shopify store with AddUp! Enhance your experience with checkout customization! Effortlessly tailor your shipping & payment methods by hiding, renaming, & reordering them. Implement dynamic product discounts based on conditions, tiers, & code patterns. Designed for B2B users, our solution includes custom form fields for customer identification during checkout, customizable line items, and the ability to highlight upsell products. Boost your brand with B2B checkout branding options.

Cash on Delivery Order Form with Shipping, Discounts, Upsells

Post Purchase Upsell & Cross sell / Thank You Page / AOV Boost

Quantity Breaks,Volume Discounts,Tiered Pricing,Bulk Discount

Frequently bought together, related product addons, bundles.


Sticky Add to Cart, Cart Slider w/ Upsell, Quick Buy & Button!

Build a Sliding Cart! Add Offers, Rewards, Free Shipping Bar +

Cash on Delivery, 1-Click Upsell, Sheets, Abandoned, Discounts