Best free Cart customization Shopify apps in 2026 [Updated]
PickYourApp Review Team
6 min read
•
Aug 29, 2025
The Best Free Shopify cart customization apps give merchants essential tools to improve their checkout experience without spending a dime. From one-click order forms and slide cart drawers to upsell features and terms & conditions checkboxes, these apps help increase average order value and conversion rates. Whether you need custom checkout rules, free shipping bars, or reordering capabilities, these free solutions let you tailor the cart experience to match your store's unique needs while building customer trust and encouraging larger purchases.
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#1. One click upsell and cross sell. Show frequently bought together product upsell & related products.
Increase your average order value with Essential Upsell's smart product recommendations. Show customers frequently bought together items, related products, and add-ons directly on product pages and in the cart drawer. Create effective upsell strategies with "also like" suggestions, product bundles, and buy-one-get-one offers. The app lets you set up one-click upsells and automatic pre-purchase discounts to encourage more sales. Customize your product recommendations and cross-sell widgets to match your store's look while making it easy for shoppers to discover complementary items. Perfect for merchants wanting to grow cart value through strategic product suggestions and bundle offers.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. Grow via side cart drawer cart upsell, sticky add to cart bar, free shipping bar & slide cart upsell
Increase your sales with a smart sticky add to cart bar that stays visible as customers browse your store. The side cart drawer lets shoppers view and edit their cart without leaving the current page, while AI-powered upsells and cross-sells help grow average order value. Quick buy buttons speed up purchasing across your store, and the free shipping progress bar motivates customers to reach discount thresholds. The one-click checkout feature simplifies the buying process directly from product pages. Similar to UpCart and iCart Opus, this app combines cart drawer functionality with smart product recommendations to create a smoother shopping experience and drive more sales.Install from Shopify App Store
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#4. Sticky Add to Cart Bar: Boost conversions by having the Add to Cart Bar always visible on scroll
Square's Sticky Add to Cart Bar helps online stores increase sales by keeping the Add to Cart button visible as customers browse product pages. This smart feature prevents purchase abandonment by maintaining easy access to the buying option, whether visitors are scrolling on desktop or mobile devices. The app seamlessly integrates with your store's design, allowing you to customize the sticky bar's colors, size, and position for a consistent shopping experience. Quick to set up and simple to manage, it works automatically with multiple languages and currencies. Track your success through built-in analytics that show click-through rates, order numbers, and revenue impact. The sticky bar creates a smoother purchase journey by keeping the crucial Add to Cart button within reach, making it easier for customers to complete their purchases.Install from Shopify App Store