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Best Cart customization Shopify apps in 2027 [Updated]
PickYourApp Review Team
6 min read
•
Oct 10, 2026
The best Shopify cart customization apps help merchants deliver a smoother shopping experience while increasing average order value. From one-click order forms and slide-out cart drawers to upsell features and terms & conditions checkboxes, these tools give store owners complete control over the checkout process. Whether you need to add free shipping bars, display product recommendations, or implement custom checkout rules, this handpicked collection of top-rated apps provides essential solutions for optimizing your store's cart and checkout flow.
| Name | Rate on Shopify | Price | Free trial | Key features |
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#1. One click upsell and cross sell. Show frequently bought together product upsell & related products.
Essential Upsell & Cross Sell
Free plan available | Free trial availableIncrease 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. -
#2. Boost AOV with a custom slide cart featuring cart discount, urgency timer, free shipping bar, etc.
Kaching CartDrawer Cart Upsell
Free plan available | Free trial availableKaching Cart Drawer Upsell helps increase your average order value with a customizable slide cart designed to drive conversions. Add upsell sliders featuring frequently bought together products, or use simple toggles for gift wrapping and shipping protection. The app includes urgency countdown timers to encourage faster checkouts, plus free shipping and free gift bars that motivate customers to add more items. Payment icons build trust right in your cart drawer. Built with user experience in mind, this cart upsell solution requires no coding and supports translation to any language. Create and customize your slide cart to turn every shopping session into a revenue opportunity and increase AOV with proven upsell strategies. -
#3. Slide cart drawer with upsells, reward bar & free shipping goal. Sticky add to cart barincluded
Essential Cart Drawer adds a customizable slide cart drawer to your store with in-cart upsells, cross-sells, and reward bars featuring free shipping goals. Set up spend tiers that unlock free shipping, free gifts, or automatic discounts as customers add items to their cart. The app includes countdown timers and announcement bars to create urgency, plus a sticky add to cart bar with product images, variant picker, and quantity selector. Choose upsell products using Shopify AI or hand-pick them yourself. Full cart customization options include discount codes, order notes, payment icons, custom HTML, and multi-language and multi-currency support for global markets. -
#4. Increase Profits, AOV & Sales with a Free Shipping Cart Progress Bar Goal and Cart Upsell.
Stop giving away free shipping without getting anything in return! This free shipping bar app helps increase your average order value and sales by showing customers how close they are to earning free shipping. When shoppers see "You're only $20 away from free shipping!", they're motivated to add more items to their cart to reach that goal. Set up a cart goal value and offer rewards like free shipping, discount codes, or other incentives when customers hit that threshold. The progress bar can be placed anywhere - on your product page, cart page, cart drawer, or as an announcement bar. The app includes cart upsell and cross-sell features to maximize results, plus revenue tracking so you can see exactly how much additional money the shipping bar generates. It's highly customizable with pre-made styles, supports multiple currencies and translations, and works with Online Store 2.0 themes. -
#5. Upgrade your cart with a high-converting slide cart, upsells, and smart rewards.
This slide cart drawer helps reduce cart abandonment and increase average order value with smart upsells, cart rewards, and free shipping bars. AI picks relevant product recommendations based on what shoppers actually buy together. The app includes cart add-ons, discounts, and a free shipping progress bar to motivate larger purchases. Works with Shopify Sidekick to check your cart setup or turn features on without opening the dashboard. Set up takes under 5 minutes with no coding required. Compatible with most themes and supports 13 languages. 24/7 support team available to help. -
#6. Prep for Black Friday and boost AOV with slide cart drawer upsells, free gifts & any design request!
Amp Slide Cart Upsell Drawer helps you increase AOV with a premium-looking cart drawer that matches your brand perfectly. Add cart upsells, cross-sell frequently bought together items, and offer free gifts based on cart value or specific products. The progress bar motivates customers to spend more by showing rewards goals. Set up BOGO deals, discounts, and announcements without any coding. This sticky cart drawer stays accessible from anywhere on your store and works across all languages and markets. Choose from agency-grade cart templates designed for different industries. Get your slide cart running in minutes with 24/7 global support ready to help. Compatible with Sidekick agent and includes any design customization you need to turn your cart into a revenue machine. -
#7. EasyGift auto adds a free gift with purchase to cart: GWP, BOGO, buy one get one & buy X get Y
EasyGift automatically adds free gifts to your cart when customers meet your offer rules. Set up gift with purchase (GWP), BOGO, buy one get one, or buy X get Y promotions with ease. Create tiered gift offers based on cart value to reward bigger purchases. Trigger your free gift offers using cart subtotal, quantity, specific products, collections, or product tags. Choose to add gifts silently or let customers pick their preferred gift from a popup. Target specific shoppers by customer tag, total spend, order history, B2B status, or country. Schedule your offers ahead of time for events like Black Friday, receive alerts when gifts go out of stock, and track orders generated by each rule. Discount your free gifts using Shopify Functions for even more flexibility in your promotions. -
#8. Boost AOV with Cart Upsells, Free Gifts, Rewards & A/B Testing
Optimize your cart with Ego's customizable Cart Drawer or enhance your existing Shopify theme cart and cart page. Add upsells, rewards bars, and free gifts to grow AOV without any code. Run A/B tests to compare different cart experiences and find what converts best. Use Test Mode to preview changes safely before going live. Set up free gifts that auto-add when eligible or let shoppers choose their preferred gift. Include product recommendations, frequently bought together offers, and reward bars to increase conversions. AI auto-translate feature helps you reach different markets. Build a complete cart solution with Ego or improve the cart you already have with proven conversion tools. -
#9. Offer one-click upsells after checkout to boost your AOV. Easy setup, seamless customization!
Kaching Post Purchase Upsell
Free plan available | Free trial availableKaching Post Purchase Upsell seamlessly integrates with your checkout process, letting you create targeted one-click upsell offers that appear right after customers complete their purchase. No additional payment information needed - customers can add recommended products with a single click. Set up personalized product recommendations using various targeting rules like minimum order value and UTM tags. The app makes it simple to design upsell offers that match your store's branding, helping you increase average order value while maintaining a smooth shopping experience. Perfect for merchants who want to maximize sales opportunities at the crucial post-purchase moment without complicated coding or technical setup. -
#10. Boost security, add checkout rules and reduce fraud with AI (agentic) Terms and Conditions Check Box
Looking to add terms and conditions to your Shopify checkout? This app solves a common problem by adding a mandatory checkbox that requires customer consent before purchase. It helps reduce chargebacks, fraud, and legal risks by ensuring customers agree to your policies. The checkbox works for GDPR compliance, privacy policy acceptance, age verification, and custom terms. You can display it for specific products or countries to meet legal requirements. The app automatically logs consent with date and time stamps for your records. Installation takes one click and integrates seamlessly with your theme. It supports OTP login, newsletter signups, PayPal, Apple Pay, and can be translated into multiple languages for international markets. Whether you need consent for holiday promotions, terms of service, or contracts, this checkbox helps protect your store and build customer trust at checkout.