Top Free Shopify Cart Customization Apps 2025

The Essential Upsell & Cross Sell app is designed to enhance sales and increase the Average Order Value (AOV) by providing user-friendly, customizable upsell widgets. It allows businesses to tailor upsell funnels according to their customers’ purchasing behaviors, displaying frequently purchased or custom products to create targeted upsell strategies.

• User-Friendly Interface: Easy to navigate and intuitive design, making it simple to install and manage upsell offers.
• Customizable Upsell Widgets: Fully customizable with 20 pre-made templates that are user-friendly and adaptable to your store’s design.
• Automated Discounts: Offers the ability to add automatic discounts to upsell and cross-sell products, encouraging more sales.
• Product and Cart Upsell Features: Allows adding upsell and cross-sell products directly on product pages and cart pages for increased visibility.
• Responsive Support Team: Provides excellent customer service, aiding in quick setup and customization according to user needs.

The app's outstanding advantages, as highlighted in user reviews, include its ease of installation and use, professional impact on store design, exceptional customer support, and highly customizable options that cater to individual merchant needs. Users commend its simplicity and effectiveness right from the start, marking it as an essential tool for online sales enhancement.

RT: Terms and Conditions Box is a useful app that adds a mandatory terms and conditions checkbox to the cart page of online stores. Customers must tick this box before they can proceed to checkout, ensuring compliance with store policies. If unchecked, a custom alert will prevent the checkout process until the box is ticked. Additionally, it logs the date and time of agreement in the order's 'Additional Details' section.

• Mandatory Checkbox: Requires customers to agree to terms and conditions by ticking a checkbox on the cart page before checkout.
• Custom Alerts: Displays an alert with personalized text if the checkbox is not ticked, preventing the checkout process.
• Timestamp Logging: Records the date and time when the checkbox is ticked, added to the order details for reference.
• Customizable Appearance: Offers various skins and animations to enhance the visual appeal of the checkbox.
• Easy Placement: Includes a visualization tool to easily select the checkbox's placement on the cart page.

The reviews highlight the app's effectiveness, ease of use, and customization options. Users appreciate its seamless integration and the added layer of customer consent management. Its free usage is especially praised, making it a highly recommended option for online sellers looking to enhance checkout compliance effortlessly.

KwikCheckout With Smart COD is a one-click checkout app designed to enhance cash-on-delivery operations and boost overall sales through prepaid conversions. It provides advanced features such as smart login, address validation, and diverse prepaid payment methods to improve checkout conversions and reduce return rates. With quick installation, various customization options, and insightful analytics, it caters to a seamless and efficient purchase experience.

• One-Click Checkout: Simplifies the purchasing process with a single click, improving customer experience and conversions.
• Comprehensive COD Suite: Offers features like COD OTP, Captcha, and fee to verify customer intent and reduce fake orders.
• Smart Analytics & Insights: Provides risk-based insights to optimize RTO interventions and improve decision-making.
• Address Validation & Smart Login: Ensures accuracy in deliveries with verified addresses and enhances customer logins.
• Customizable Discounts & Offers: Increases average order value with flexible discount options and free gifts.

The app is highly praised for its reliable and responsive customer support, making cash-on-delivery services easier and more efficient. Users commend the team's promptness and dedication in resolving issues, as well as the app’s ability to integrate smoothly and reduce RTOs effectively. The outstanding support and user-friendly features consistently receive a 5-star rating, making KwikCheckout a highly recommended choice for businesses seeking an enhanced COD experience.

UpCart is a comprehensive drawer cart builder designed to enhance the shopping experience by providing an intuitive, customizable cart interface that aligns with your brand. It boosts sales through upselling and cross-selling features, and helps to minimize cart abandonment with sticky cart buttons.

• Brand Consistency: Offers customizable cart designs that seamlessly integrate with your site’s branding for a cohesive shopping experience.
• Upselling and Cross-Selling: Includes modules for in-cart promotions to increase average order value (AOV), including free shipping or discount promotion bars.
• Announce Updates: Allows brands to relay important messages and updates directly within the cart interface via announcements.
• Sticky Cart Button: Enhances cart visibility and accessibility, encouraging customers to proceed with their purchases and reducing abandonment.
• Add-On Options: Enables the inclusion of additional products or services, such as shipping insurance, directly within the cart for customer convenience.

Based on user reviews, UpCart is praised for its substantial impact on increasing average order value and its exceptional customer service, making it indispensable for Shopify store owners. Its reasonably priced dynamic cart solution and responsive, expert support team make it a standout tool in ecommerce management.

Opus Cart Upsell Cart Drawer elevates your cart experience by providing advanced customization options that go beyond default settings. Designed to align with your branding, it features multi-currency rewards bars, cart upsells, extra gifts, discounts, and a sticky cart button to boost average order value (AOV) and reduce cart abandonment.

• Advanced Cart Customization: Tailor your cart design to fit brand aesthetics and objectives seamlessly.
• Multi-Currency Rewards: Increase AOV with diverse rewards, including multiple currency options, extra gifts, and discounts.
• Sticky Cart Button: Ensures easy access and navigation across all store pages, improving conversion rates by minimizing cart abandonment.
• Cross-Selling Features: Incorporate related product suggestions to boost sales and maximize cart value.
• End-to-End Customer Support: Receive exceptional service from a dedicated support team for an enhanced user experience.

The Opus Cart Upsell Cart Drawer app receives high praise for its outstanding advantages, particularly its seamless functionality, ease of customization, and responsive, friendly support team. Users have expressed their satisfaction with the app’s intuitive design and robust upselling features, all offered for free, making it an attractive tool for enhancing shopping experiences and boosting sales. Reviewers highlight the excellent customer service, especially commending team members like Lucas and Lulla for their efficient and personalized assistance.

CartBot: Gift with Purchase is a versatile app that allows you to automatically add specific products or gifts to a customer's cart when they buy designated products. This user-friendly app enables easy configuration, editing, and removal of these offers to enhance the shopping experience effortlessly.

• Automatic Product Addition: Seamlessly adds specific products or gifts to customers' carts when they meet certain purchase criteria.
• Configurable Cart Bots: Provides flexibility to easily configure, edit, or remove bots based on your promotional needs.
• Advanced Quantity Conditions: Includes features to set minimum and maximum quantity conditions for added gifts.
• Reverse Bot Setup: Innovative feature to automatically remove gifts if purchase conditions are not fulfilled.
• Cart Value-based Gifting: Enables creation of bots to add gifts based on the total cart value.

CartBot has received high praise from users for its simplicity, effectiveness, and cost-efficiency. Reviewers highlight its easy setup and immediate results, making it a standout solution for businesses looking to enhance their cart offerings without the hassle and expense associated with other apps. Many users found it a lifesaver for their unique promotional needs.

The Slide Cart Drawer by AMP is designed to enhance your store's average order value through features such as progress bars, cart upsells, and free gifts. It offers a visually appealing, sticky cart drawer that ensures easy accessibility and reduces cart abandonment. Recent updates include Single Click Shipping Protection Upsells and new Cart Upsell UI options used by leading brands.

• Cart Upsell & Cross Sell: Suggests frequently bought together items right in the cart.
• Rewards Progress Bar: Encourages customers to spend more by displaying spending goals.
• Free Gifts: Allows offering of gifts when customers reach certain buying criteria.
• Discount Bar: Provides the ability to apply and stack discount codes directly in the cart drawer.
• Sticky Cart Drawer: Offers a floating cart that remains accessible from anywhere on the site.

The Slide Cart Drawer app stands out for its exceptional customer service and ease of setup, as reflected in user reviews. Customers praise the app's reliability, its ability to seamlessly integrate and enhance the store's functionality, and the quick response time by the support team. The app is highly recommended for its customizable features and substantial positive impact on user experience.

Slide Cart, Sticky Add To Cart is designed to increase your Average Order Value (AOV) and boost conversion rates by offering a seamless shopping experience. It features a Sticky Add to Cart bar and Slider Cart Drawer that allow customers to add notes, apply discount codes, estimate shipping rates, and more without navigating away from the current page.

• Sticky Add to Cart: Keeps the add to cart button constantly visible as customers scroll or swipe, improving user experience and increasing conversion rates.
• Cart Upsell: Encourages additional purchases by recommending frequently bought together items directly in the cart.
• Sticky Cart Drawer: Allows customers to view and interact with their shopping cart without leaving the current page, streamlining the checkout process.
• Customization Options: Offers free shipping progress bar, countdown timer, and tools for applying notes, terms, and conditions, and trust badges.
• User Interface: Clean, user-friendly, and fully customizable slide cart UI that enhances shoppers' overall experience.

Based on reviews, the app's standout advantages include its easy integration, user-friendly, customizable design, and its ability to significantly enhance the shopping experience. It effectively increases revenue and AOV, making it a must-have for any Shopify store looking to boost sales.

Rebuy Personalization Engine is an innovative app that leverages proprietary AI/ML technology to facilitate personalized ecommerce experiences. Integrating no-code, low-code, and custom coding solutions, it provides flexible and tailored features such as customizable search, merchandising rules, and advanced A/B/n testing. With comprehensive tools, it empowers brands to craft fully personalized customer journeys from the homepage through to post-purchase and beyond.

• AI-Powered Search: Offers a fully customizable and efficient search experience tailored to individual customer needs.
• Smart Cart Integration: Features a robust, customizable cart that leverages AI for enhanced shopping experiences.
• Dynamic Product Recommendations: Utilizes data to drive personalized product recommendations, particularly during checkout, enhancing conversion rates.
• Comprehensive Integration: Seamlessly connects with industry-leading platforms to streamline every step of the customer journey.
• Advanced Merchandising and A/B/n Testing: Allows for the development of dynamic merchandising rules and running of A/B/n tests to optimize sales strategies.

Rebuy stands out for its unparalleled customer support and user-friendly functionality, as reflected in its reviews. Users consistently praise its effective personalization capabilities and seamless integration process. The dedicated support team receives high accolades for their assistance and expertise, ensuring smooth setup and ongoing optimization. These features contribute significantly to increased conversions and improved customer experience.

iCart Cart Drawer Cart Upsell enhances the shopping experience by transforming adds to carts into sales using customizable features, such as a sticky cart and cart drawer. It offers a diverse range of upselling and cross-selling tools, including progress bars and free gifts, to encourage additional purchases and maximize revenue.

• Upselling and Cross-selling: Increase average order value (AOV) with effective in-cart upsell and cross-sell options.
• Sticky Cart Drawer: Minimize cart abandonment by maintaining a visible slide cart or mini cart.
• Cart Discount: Enhance your cart with volume discounts, free gifts, and purchase discount codes.
• Progress Bar: Encourage more purchases with a free shipping bar and gift incentives.
• Countdown Timer: Instill urgency in product upsell offers to boost sales.

The iCart app is highly praised, as seen in user reviews. It is lauded for increasing sales by at least 10% due to upselling features, providing responsive and professional customer support, and offering seamless cart functionality. Users have described it as easy to use, with significant improvements in store operations, making it a highly recommended tool for boosting revenue and optimizing ad conversions.

The In Cart Upsell & Cross-Sell Shopify App is designed to boost average cart values by creating customized upsell and cross-sell offers. It enhances the shopping experience through personalized triggers and rules, and allows businesses to optimize their strategies with A/B testing and an intuitive analytics dashboard. Set up in just 3 minutes, this powerful app is perfect for maximizing revenue through targeted upselling and cross-selling.

• Conditional Logic & Triggers: Personalize shopper experience by setting specific conditions and triggers for upsell and cross-sell offers.
• A/B Testing: Optimize upsell strategies by testing different approaches and measuring their effectiveness through easy-to-use A/B testing tools.
• Intuitive Analytics Dashboard: Gain valuable insights into conversion patterns with a comprehensive and easy-to-read analytics dashboard.
• Quick Setup: Get started with upselling and cross-selling in under 3 minutes with an easy setup process.
• AI Autopilot: Leverage AI technology to automatically enhance upselling and cross-selling strategies for better results.

Based on user reviews, the app's outstanding advantages include the exceptional customer support provided, particularly by a team member named Lasandra, who ensures seamless integration and customization help. Users appreciate the ease of use and the app's comprehensive capabilities to enhance sales through flexible cross-selling and upselling options.

Monk Free Gift+Checkout Upsell is designed to drive incremental sales for your store by offering gift offers, discounts, and upsells throughout the customer's buying journey. Customize the app's widgets and create personalized buyer experiences with a robust eligibility system.

• Gift and Upsell Offers: Display various gift offers, discounts, and product recommendations from product pages to post-checkout to enhance shopping experiences.
• Customizable Design: Tailor the design and user experience of widgets to align with your brand’s aesthetics, including text translations for a global reach.
• Personalized Buyer Experiences: Utilize a sophisticated eligibility system for creating personalized offers and experiences based on customer behavior and purchases.
• Enhanced Cart Conversion: Combine cart upsells with a tiered progress bar to encourage customers to increase their cart value for additional rewards.
• Comprehensive Setup: Set up upsells, cross-sells, and bundles throughout the buying journey using a user-friendly platform.

The app's outstanding advantages, as reflected in reviews, include its extensive feature set that negates the need for multiple apps. Users praise the app for its seamless integration, excellence in customer support, reliability, and its ability to enhance sales noticeably. The support team is highlighted as exceptionally responsive, often resolving queries swiftly and effectively, contributing to an overall positive experience with the app.

XB: Sticky Add to Cart Upsell, also known as Xboost, is designed to enhance Average Order Value (AOV) and Conversion Rate (CR) with targeted features. It employs AI-Powered Cart Upsell to suggest relevant products, offers Cart Addons like Shipping Protection, and includes tools like a Free Shipping Bar and Sticky Add to Cart for boosting sales and maintaining easy access to the cart.

• AI-Powered Cart Upsell: Suggests relevant products to efficiently increase order value.
• Cart Addons (Shipping Protection): Provides added security with shipping protection options.
• Sticky Add to Cart Button: Keeps the button visible to continually boost conversion rates.
• Express Payment: Streamlines the checkout process for a better customer experience.
• Trust Badges and Announcements: Builds customer trust and prompts quick actions with countdowns.

The XB: Sticky Add to Cart Upsell app stands out for its flawless performance, user-friendly design, and impressive support team. Users highlight the app’s reliability, ease of use, and the exceptional responsiveness of the customer support. The combination of powerful features and effective support makes it a highly recommended solution for boosting e-commerce efficiency and sales.

Essential Free Shipping Upsell is a powerful tool for e-commerce retailers designed to boost sales by encouraging customers to spend more for free shipping. By showing customers how close they are to achieving free shipping, this app motivates them to meet predefined cart goals, enhancing the average order value through integrated upselling and cross-selling strategies. Easily customizable, it supports various languages, currencies, and themes.

• Placed Anywhere: The app's progress bar can be positioned flexibly on product pages, cart pages, cart drawers, or as an announcement bar for optimal visibility.
• Boosts Average Order Value: Includes the ability to add product upsells, cross-sells, and cart upsells to encourage higher spending.
• Revenue-Oriented: Tracks and reports on additional revenue generated by the app's features, providing clear insights into its financial impact.
• Highly Customizable: Offers the ability to fully customize the cart goal progress bar or use pre-made styles to match branding and design preferences.
• Extras: Supports multiple languages, different currencies, and Online Store 2.0 themes, ensuring compatibility and accessibility.

The app stands out for its exceptional customer service, receiving numerous five-star reviews for quick and efficient support, which ensures a smooth user experience. Reviews highlight its user-friendliness and effective features that cater to various needs, enhancing functionality while remaining cost-effective, making it a highly recommended choice among users.

Slide Cart: Sticky Cart Drawer is a Shopify app designed to enhance the standard shopping cart by transforming it into a sticky cart experience. It features a dynamic cart drawer, fast cart popups, and order management capabilities, simplifying the "Add to Cart" process for online stores.

• Sticky Cart Shopify: Upgrades the default cart to a sticky cart experience, enhancing user engagement.
• Fast Cart Popup: Provides quick access to cart details, improving checkout efficiency.
• Bulk Cart Management: Facilitates bulk order processing with ease, optimizing order management.
• Personalized Cart Messages: Allows customization of messages to customers, fostering better connection and upsells.
• Seamless Cross Cart Experience: Enhances shopping experience by creating smoother transitions between cart and store.

The app is highly praised in reviews for its ease of integration, top-notch customer support, particularly from Anne, and the significant impact it has on reducing cart abandonment rates while improving user experience. Users appreciate the customized features without unexpected fees, and many have noted a direct increase in sales after implementing the app in their stores.

Corner Free Gift & Cart Upsell allows e-commerce store owners to offer multiple free gifts or let customers select from a list of gifts, utilizing regular inventory products. It simplifies inventory management by avoiding $0 product creation and maximizes conversion through smart upsells.

• Multiple Free Gifts: Offer numerous free gifts simultaneously or allow customers to choose from a selection, enhancing customer satisfaction.
• Inventory Management: Use regular inventory items as gift options without creating $0 products, maintaining inventory integrity.
• Smart In Cart Upsells: Offer upsells such as frequently bought together products directly in the cart for increased sales.
• One Click Upsell: Simple upsell options like gift wrapping can be activated with a single click.
• Multi-tier Progress Bar: Offer gifts and shipping based on total cart value, encouraging higher cart totals.

Corner Free Gift & Cart Upsell is highly rated for its exceptional functionality, user-friendly customization, and outstanding customer service. Users appreciate its seamless integration during high-volume sales periods and its diverse features that outshine other apps, boosting cart value and conversion rates effectively.

ModeMagic ‑ Store Conversions leverages advanced neural algorithms to enhance consumer interaction by analyzing behavioral data and enhancing personalized shopping experiences. It aims to improve conversion rates by accurately predicting purchase likelihood and tailoring product suggestions. The app is easy to implement, offering templates, no-code integrations, and automations to maximize revenue and re-engage lost shoppers.

• Neural Algorithms: Analyze consumer behavior to predict purchase likelihood and price-point affinity, enhancing personalized recommendations.
• Easy Setup: Offers out-of-the-box templates and no-code integrations, making implementation straightforward and efficient.
• Customer Journey Optimization: Personalizes in-store journeys to decrease dropoffs, increase time on site, and improve basket sizes and post-purchase interactions.
• Engaging Features: Includes quizzes, spin-the-wheel games, and flash sales to increase enjoyment and urgency, ultimately boosting sales.
• Smart Upsell Offers: Provides smart bundling and personalized offers to increase margins and conversion rates.

The app's reviews highlight its outstanding ability to recover lost shoppers, boost sales through innovative features like flash sales and quizzes, and enhance customer engagement with personalized journeys. Users commend the easy setup process and the significant impact on revenue growth, noting the intuitive interface and effective support team as major advantages.

The TnC: Terms and Conditions Box app allows store owners to effortlessly add a customizable checkbox to various points on their online store, ensuring that customers agree to important policies before completing a purchase. This feature is vital for compliance with legal requirements and offers flexibility across different store pages and transactions.

• One-click Installation: Easily add a terms and conditions checkbox to your store's cart page and Ajax popup cart drawer with just one click.
• Versatile Usage: The checkbox can be customized for various purposes like terms of use, shipping policies, legal agreements, and RGPD/GDPR compliance.
• Integration Capabilities: Supports express checkout payment gateways such as PayPal, Apple Pay, and more.
• Geolocation-specific Checks: Show the checkbox for specific products and visitors from selected countries.
• Customizable Placement: Can be added to contact forms, newsletter footers, and registration forms for comprehensive policy acknowledgment.

The app's outstanding advantages, as highlighted by user reviews, include its simplicity and ease of use, excellent and responsive customer support, and efficient problem-solving. Users have praised the quick and effective assistance provided by the support team, particularly when dealing with technical issues or custom setup requirements, thus ensuring a smooth experience for all merchants.

Cart Upsell—Slide Cart Drawer is a powerful tool designed to enhance your store’s sales by providing a smooth cart upsell solution. This app allows customers to seamlessly add notes, apply discounts, and estimate shipping rates without leaving the cart view, aimed at reducing abandoned carts and boosting average order values.

• Customizable Slide Cart: Drag and drop builder to fit any store theme for a personalized shopping experience.
• Dynamic Upsell Features: Includes sale max upsell without disruptive pop-ups, and product recommendations to increase sales.
• Progressive Free Shipping Bar: Encourages customers to add more items to qualify for free shipping, enhancing purchase motivation.
• Product Bundle Discounts: Offers bundle discounts directly within the cart to double profit margins effortlessly.
• Easy Integration: Integrates smoothly with Shopify stores, providing a polished cart experience that retains shopper focus on the product page.

The app’s outstanding advantages, as noted in user reviews, are its smooth integration and transformative improvement of the shopping experience, deemed easy to use even for beginners. The customizable features and responsive customer support contribute to a highly positive customer experience. Moreover, users have consistently reported increases in their average order value, making it a vital addition to their online stores.