Best free Cart customization Shopify apps in 2026 [Updated]
PickYourApp Review Team
6 min read
•
Dec 27, 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.
-
#1. Turn cart into conversion with sleek slide-out drawer, quick checkout & full customization.
AOV.ai Cart Drawer Cart Upsell transforms your standard cart into a sleek slide-out cart drawer with real-time updates as customers shop. This cart upsell tool helps increase AOV with irresistible offers displayed right inside the cart drawer. Fully customizable to match your store's look - adjust layout, styling, and cart elements including variants visibility. Speed up checkout with the quick "Checkout Now" button while customers can add discount codes and leave order notes for smoother order fulfillment. The slide cart features smooth animations, trust badges, and announcement bar to boost conversion. Mobile-ready and compatible with all major Shopify themes, backed by 24/7 support to help you maximize sales.Install from Shopify App Store
-
#2. 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
-
#3. Boost Revenue and AOV with Custom Quantity Breaks Bundles Products, AI Combo Bundles, and Free Gifts
Increase your store's average order value with Easy Bundles' comprehensive quantity breaks and bundle solutions. Create volume discount bundles, AI-powered product combinations, and custom bundle offers that work across product pages, checkout, and post-purchase screens. Set up mix-and-match bundles, BOGO deals, and "Buy X Get Y" promotions with our native Shopify app. Track bundle performance through A/B testing and detailed analytics. The app supports multiple languages and currencies, making it accessible to global customers. Get started quickly with one-click publishing and 24/7 customer support via live chat, email, and our help center. Our user-friendly interface makes bundle management simple and effective for any Shopify store owner.Install from Shopify App Store
-
#4. Lift Conversions with Sticky Cart Bar, Floating Cart, Sticky Buy Button & Express Checkout.
Increase your store's conversion rate with a sticky add to cart bar that follows customers as they browse your products. The floating cart and sticky buy buttons keep shopping options visible at all times, making purchases more convenient. Add urgency with a built-in countdown timer and share important updates through the announcement bar. The sticky cart is fully responsive, working smoothly on both desktop and mobile devices. Customize the cart design and layout to match your store's branding. The homepage sticky add to cart feature lets you promote specific products right from your main page, while express checkout streamlines the buying process. Perfect for stores looking to improve their shopping experience and make purchasing easier for customers.Install from Shopify App Store