Cart Upsell—Slide Cart Drawer let you uplift revenue with unlock offers cart upsell & cross sell Uplift sales with Cart Upsell , Slide Cart Drawer to boost sales & aov with cart upsell solution for your store's cart mini cart and cart page. Improve customers' experience by letting them add note, apply discount codes, estimate shipping rates without going to the cart sidebar and cart slidebar to buy more and reduce abandoned cart with free shipping progressive bar, countdown timer, product upsell. Use sale max to increase your average order value with our upselling and cross-selling module. Uplift sales with Cart Upsell , Slide Cart Drawer to boost sales & aov with cart upsell solution for your store's cart mini cart and cart page. Improve customers' experience by letting them add note, apply discount codes, estimate shipping rates without going to the cart sidebar and cart slidebar to buy more and reduce abandoned cart with free shipping progressive bar, countdown timer, product upsell. Use sale max to increase your average order value with our upselling and cross-selling module. more Drag and drop customizable slide cart and cart page builder that fit your theme Slide cart upsell in sale max instead of showing annoying cart popup Create free shipping progressive bar, cart countdown timer Show relevant product recommendations in cart drawer based on the customers cart Product bundle discounts in side cart and double your profit margin
Custom CSS Shopify Apps
Discover the best Custom CSS apps for your Shopify store in 2026. Compare features, pricing, and reviews to find the perfect solution.
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Sense of Urgency, Fear Of Missing Out and Social Proof with our live sales notifications pop-up app. Display recently purchased products in real-time popup notifications to show how fast-selling they are with SalesPush. Use these sales notifications as social proof and to create a sense of urgency around products a shopper is interested in. With Sales Push, you can create and showcase manual sales notifications on your store too, to cross-sell selected products, coupon marketing or to offer free shipping! Display recently purchased products in real-time popup notifications to show how fast-selling they are with SalesPush. Use these sales notifications as social proof and to create a sense of urgency around products a shopper is interested in. With Sales Push, you can create and showcase manual sales notifications on your store too, to cross-sell selected products, coupon marketing or to offer free shipping! more Show recent sales notifications to site visitors for social proof and scarcity. Manual popup notifications to cross-sell products. Display custom alerts with coupon code or free shipping details.
Grow AOV with bundles volume discounts, quantity breaks, BOGO, free shipping and cart upsells Salify is an all-in-one product bundle, discount, and upsell app built to increase average order value. Create product bundles, volume discounts, quantity breaks, BOGO, free gifts, mix-and-match bundles, free shipping bars, cart upsells, and cross-sells. Add frequently bought together offers, stack and schedule promotions, and target offers by product, collection, customer tag, order history, or cart total. Built with Shopify Functions, no coding required. Salify is an all-in-one product bundle, discount, and upsell app built to increase average order value. Create product bundles, volume discounts, quantity breaks, BOGO, free gifts, mix-and-match bundles, free shipping bars, cart upsells, and cross-sells. Add frequently bought together offers, stack and schedule promotions, and target offers by product, collection, customer tag, order history, or cart total. Built with Shopify Functions, no coding required. more Create fixed, mix-and-match, variant, and build-a-box product bundles. Increase order size with tiered pricing, quantity breaks, and bulk discounts. Create Buy X Get Y offers, free gifts, and threshold-based promotions. Market support, add product, cart drawer, checkout, and thank-you page upsells. Recommend complementary products with bundles and cross-sell offers.
Shipping protection and extended warranties under your brand. You keep 100% of revenue Sam lets you run your own shipping protection program, fully under your brand — no middlemen, no revenue sharing. Customers add protection at cart, checkout, or thank-you page for peace of mind against lost, damaged, or stolen orders, and extended warranties (product protection) on product pages. Full control over pricing, visibility, and claims, with automation built in. Multi-language and multi-currency supported. Sam is not an insurance provider — it's the tooling to run protection in-house. Sam lets you run your own shipping protection program, fully under your brand — no middlemen, no revenue sharing. Customers add protection at cart, checkout, or thank-you page for peace of mind against lost, damaged, or stolen orders, and extended warranties (product protection) on product pages. Full control over pricing, visibility, and claims, with automation built in. Multi-language and multi-currency supported. Sam is not an insurance provider — it's the tooling to run protection in-house. more Widget on cart, checkout & thank-you page — auto-add & auto-fulfill Keep 100% of revenue — no middlemen, no revenue sharing Extended warranty & product protection offers on chosen product pages Flexible pricing: fixed, range or %; show/hide by cart value, country Self-serve claims portal — customers submit & track claims easily
Boost Sales with Free Product Samples Based on Cart Value – Smart Upsell & Cross-Sell Strategy! Drive sales and engagement with Sample Products! Offer free samples based on cart value, giving customers the freedom to explore new products. Unlike BOGO & standard free product apps, this tool personalizes incentives, making it ideal for cosmetics, healthcare & food supplements, pet products, and FMCG brands. Increase AOV, reduce discounts, and create loyal shoppers by letting them try before they buy! it’s a smart upsell tool that Maximize conversions with strategic free sampling! Drive sales and engagement with Sample Products! Offer free samples based on cart value, giving customers the freedom to explore new products. Unlike BOGO & standard free product apps, this tool personalizes incentives, making it ideal for cosmetics, healthcare & food supplements, pet products, and FMCG brands. Increase AOV, reduce discounts, and create loyal shoppers by letting them try before they buy! it’s a smart upsell tool that Maximize conversions with strategic free sampling! more Perfect App for Cosmetics, Health Care & Food Supplements, Pet Products & FMCG Offer free samples based on cart value with custom rules & limits. Let customers choose their samples — no forced gifts or BOGO restrictions. Set flexible sample rewards like 1 for $50, 2 for $75, or any custom rule. Boost AOV & reduce discounts with strategic sample-based upselling.
Announcement bars, popups, trust badges & cart rewards all in one targeted conversion toolkit. SB Announcement Bar helps you show the right message to the right customer at the right time. Create or schedule a global bar or target by page, product, collection, cart value, customer tags, or country. Add countdown timers, carousels, and marquee text. Capture emails with discount and subscribe popups, display up to 6 trust badges, and use a cart rewards progress bar for free shipping or gifts. Track impressions, clicks, CTR, and conversions per campaign. Works with all Shopify themes. SB Announcement Bar helps you show the right message to the right customer at the right time. Create or schedule a global bar or target by page, product, collection, cart value, customer tags, or country. Add countdown timers, carousels, and marquee text. Capture emails with discount and subscribe popups, display up to 6 trust badges, and use a cart rewards progress bar for free shipping or gifts. Track impressions, clicks, CTR, and conversions per campaign. Works with all Shopify themes. more Target bars by page, product, collection, cart value, customer, or country. Cart rewards progress bar unlocks free shipping, discounts, or free gifts. Discount and email popups capture subscribers and deliver instant coupons. Up to 6 trust badges in static, marquee, or carousel layouts. Track impressions, clicks, CTR, and conversions for every campaign.
4 countdown timer types with geo targeting & analytics. Boost FOMO & urgency SB Countdown Timer Bar includes 4 countdown timer types: Product Page Timer, Announcement Bar, Cart Drawer Timer, and Landing Page Timer. Create urgency and FOMO to boost sales on any page. Target products or collections with rule-based countdown timers or run store-wide flash sale timers. Geo targeting shows timers by visitor country. Includes 10 flip-clock styles, CTA buttons, scheduling, recurring timers, and built-in analytics tracking views, clicks, and CTR. SB Countdown Timer Bar includes 4 countdown timer types: Product Page Timer, Announcement Bar, Cart Drawer Timer, and Landing Page Timer. Create urgency and FOMO to boost sales on any page. Target products or collections with rule-based countdown timers or run store-wide flash sale timers. Geo targeting shows timers by visitor country. Includes 10 flip-clock styles, CTA buttons, scheduling, recurring timers, and built-in analytics tracking views, clicks, and CTR. more 4 timer types: product page, bar, cart drawer & landing page Geo targeting by visitor country for localized urgency campaigns 10 animated clock styles: glass, neon, gradient, minimal & more Rule-based timers for products and collections Analytics dashboard tracking views, clicks, CTR & visitors
Add unlimited custom product options with pricing, validation, and full design control. SB Product Options, Variants helps merchants add custom option fields to products and collections without editing theme code. Collect buyer input using text fields, selections, swatches, dates, and file uploads before checkout. Assign option sets automatically, charge additional prices for customizations, validate required fields, customize styling, and translate all customer-facing text. Works seamlessly with Online Store 2.0 and legacy themes. SB Product Options, Variants helps merchants add custom option fields to products and collections without editing theme code. Collect buyer input using text fields, selections, swatches, dates, and file uploads before checkout. Assign option sets automatically, charge additional prices for customizations, validate required fields, customize styling, and translate all customer-facing text. Works seamlessly with Online Store 2.0 and legacy themes. more Create custom product options using text, swatches, dates, and file uploads. Apply option sets automatically to individual products or entire collections. Charge additional prices for customizations at option or option-set level. Customize option appearance with fonts, colors, spacing, and custom CSS. Validate inputs, translate labels, and manage customer data securely.
Unlimited Product Customization with Infinite Options, Variant Options, Swatches & Conditional Logic SC Product Options is your ultimate variant option app for product customization. It enables you to add limitless product options and variant images to your product pages, allowing customers to fully customize products to their liking. Whether you need to add color swatches, text boxes, or file upload fields, this product customizer has you covered. Take your Shopify store to the next level with SC Product Options. SC Product Options is your ultimate variant option app for product customization. It enables you to add limitless product options and variant images to your product pages, allowing customers to fully customize products to their liking. Whether you need to add color swatches, text boxes, or file upload fields, this product customizer has you covered. Take your Shopify store to the next level with SC Product Options. more Create unlimited product options fields with advanced conditional logic. Upsell custom products to boost revenue and Average Order Value. Support for color swatches and variant images to visualize customizations. Text box and file upload features for customer-provided details. Reduce returns and increase retention with product personalizer.
Maximize order value with an interactive, on-brand, geo-targeted sales motivator bar in minutes. Sell more to every customer, and ignite revenue with branded, interactive promotional campaigns. Create urgency and boost sales with real-time calculations to let them know how close they are to receiving a promotion, free gift, promo code or free shipping. Use geolocations to display promotions specific to regions or countries. Set up your promotional drop-down banner in seconds from the comfort of your admin account. Onboarding & Setup Assistance. Point and click to customize - no code needed! Sell more to every customer, and ignite revenue with branded, interactive promotional campaigns. Create urgency and boost sales with real-time calculations to let them know how close they are to receiving a promotion, free gift, promo code or free shipping. Use geolocations to display promotions specific to regions or countries. Set up your promotional drop-down banner in seconds from the comfort of your admin account. Onboarding & Setup Assistance. Point and click to customize - no code needed! more Ignite revenue and grow AOV with branded, interactive promotional campaigns. Real-time sales calculations and interactive messaging to create urgency. Tell customers how much they need to spend to reach a goal when they add to cart Geolocation to display promotions and messaging to specific countries or regions No code, no risk, point and click to customize your banner in seconds.
Easily create a powerful store, dealer and stockist locator map. No API key needed. Add a fast, searchable store locator map to your site and help customers find the right store, dealer, or stockist near them. Our Google Maps location finder works with autocomplete search, map directions, and premium templates you can customize with live preview. Import thousands of locations by CSV in minutes. Built-in location analytics show where shoppers are searching for your products. Built for multi-location brands and dealers who want more in-store sales and fewer support emails. Add a fast, searchable store locator map to your site and help customers find the right store, dealer, or stockist near them. Our Google Maps location finder works with autocomplete search, map directions, and premium templates you can customize with live preview. Import thousands of locations by CSV in minutes. Built-in location analytics show where shoppers are searching for your products. Built for multi-location brands and dealers who want more in-store sales and fewer support emails. more Bring customers to your door with geolocation and real-time directions. Easily search for stores by location, postcode, store name or search tags. Organize your stores in groups and share more info with custom fields. Bulk-assign groups, custom fields, and working hours to many stores at once. Customize yor map, with a live preview as you edit; custom CSS and HTML.
Hide sold-out variants and improve your store conversion rate Scala Hide Sold Variants provides an easy way to indicate your customers which variants they are not able to buy, because they are out of stock or other reasons. This greatly reduce lost sales from customers who find out their item is unavailable only when they are about to checkout. You can hide variants or add a custom disabled overlay for clarity. This lightweight app works without altering your theme files and requires no access to your customer or product data. Scala Hide Sold Variants provides an easy way to indicate your customers which variants they are not able to buy, because they are out of stock or other reasons. This greatly reduce lost sales from customers who find out their item is unavailable only when they are about to checkout. You can hide variants or add a custom disabled overlay for clarity. This lightweight app works without altering your theme files and requires no access to your customer or product data. more Hide, disable, or strike-through any sold-out, unavailable or custom variant No limits: works with unlimited variants and unlimited products Hide variants based on custom rules such as region, inventory or tags Works with dropdown, swatches and other custom apps Doesn't read your customers and product data or alter your theme files
Increase your sales by creating countdown timers, banners and offers inside the theme editor Scala Scarcity & Urgency enables you to create countdown timers and banners. You can customize the color, message, spacing, date and preview how your store will look inside the theme editor, before publishing changes. The timers countdown use mostly CSS and minimal javascript, so it doesn't make your store slower. Scala Scarcity & Urgency enables you to create countdown timers and banners. You can customize the color, message, spacing, date and preview how your store will look inside the theme editor, before publishing changes. The timers countdown use mostly CSS and minimal javascript, so it doesn't make your store slower. more Countdown timer with start and end date, or automatic renewal Banner with countdown and promotion link Low stock scarcity bar Cart urgency messaging
Display a cookie consent banner in your store in a few seconds Scala EU GDPR Cookie Banner is easy to configure and can be edited inside the theme editor The banner is made to be GPDR, CCPA, LGPD compliant, but can also be used for other countries as well. IMPORTANT: The app only provides a cookie consent bar, it's your responsibility to block your website cookies in case consent is not given Scala EU GDPR Cookie Banner is easy to configure and can be edited inside the theme editor The banner is made to be GPDR, CCPA, LGPD compliant, but can also be used for other countries as well. IMPORTANT: The app only provides a cookie consent bar, it's your responsibility to block your website cookies in case consent is not given more Customizable message, color and position Doesn't change your theme files, only has permission to read them and not change Doesn't use cookies to store customer preferences
Hide, rename or reorder payment methods in your checkout based on cart conditions. Scala Hide Payments allows you to reorder, rename, or hide specific payment methods based on your customer's cart conditions. The app runs during checkout without impacting your store speed, and let's you choose up a number of conditions, including cart total, products and collections in cart, customer language, customer tags, selected shipping method, shipping address and much more. Scala Hide Payments allows you to reorder, rename, or hide specific payment methods based on your customer's cart conditions. The app runs during checkout without impacting your store speed, and let's you choose up a number of conditions, including cart total, products and collections in cart, customer language, customer tags, selected shipping method, shipping address and much more. more Hide payment options, including express options such as paypal Reorder payment methods based on conditions Rename payment options based on conditions No impact on store speed, runs directly from Shopify only during checkout
Increase your sales with Scalapay On-site Messaging Thanks to this customizable app, Scalapay On-site Messaging informs your customers about the Scalapay payment methods available in your store. Our app helps you create tailored messages to promote your partnership with Scalapay wherever you like, in product and cart page. Make sure Scalapay is active as a payment method at your checkout. Download the app and activate Scalapay On-site Messaging. Now tell your customers that they can shop with Scalapay and see your sales grow! Thanks to this customizable app, Scalapay On-site Messaging informs your customers about the Scalapay payment methods available in your store. Our app helps you create tailored messages to promote your partnership with Scalapay wherever you like, in product and cart page. Make sure Scalapay is active as a payment method at your checkout. Download the app and activate Scalapay On-site Messaging. Now tell your customers that they can shop with Scalapay and see your sales grow! more Promote to customers the availability of Scalapay payment method and boost sales Tailor and personalize your messaging to maximize cart conversions Add the Scalapay widget and pop-up to your product and cart page
Create Urgency with countdown timer bar, flash sale timer, product countdown & sales countdown clock Make more money with the power of Scarcity.AI! Create scarcity, urgency and FOMO to rush customers to buy now. Add a cart timer, checkout timer, sale timer, timer bar or countdown timer bar. The pre-checkout timer reserves the cart, and the count down timer empties it at zero - real Scarcity, not just a clock, counter or countdown. Use converting holiday presets for Halloween, Black Friday (BFCM) & Christmas (Navidad). Turn hesitation to conversion. Reduce abandoned carts & boost revenue today. Make more money with the power of Scarcity.AI! Create scarcity, urgency and FOMO to rush customers to buy now. Add a cart timer, checkout timer, sale timer, timer bar or countdown timer bar. The pre-checkout timer reserves the cart, and the count down timer empties it at zero - real Scarcity, not just a clock, counter or countdown. Use converting holiday presets for Halloween, Black Friday (BFCM) & Christmas (Navidad). Turn hesitation to conversion. Reduce abandoned carts & boost revenue today. more Add a cart countdown timer to your cart page, cart drawer, side cart & timer bar Reserve cart & auto-empty it when the Scarcity countdown cart timer hits zero Add an announcement bar timer and Timer App Blocks to any page, product or cart Converting presets for Halloween, Black Friday (BFCM) & Christmas flash sale AI-powered Scarcity: customize your countdown clock, counter & timer bar text
Infinite Scroll, Load More & Lazy Load to boost product discovery and sales. Make product browsing faster, engaging, and smooth with Scroller Pro. Add Infinite Scroll or a Load More button to collection pages so shoppers can discover more products without pagination. Use Lazy Load for smoother browsing, Scroll to Top for long collections, and preserve loaded products when customers use the browser Back button. Customize the scroll bar to match your store. Mobile responsive, quick to set up, with 24/7 live chat support. Make product browsing faster, engaging, and smooth with Scroller Pro. Add Infinite Scroll or a Load More button to collection pages so shoppers can discover more products without pagination. Use Lazy Load for smoother browsing, Scroll to Top for long collections, and preserve loaded products when customers use the browser Back button. Customize the scroll bar to match your store. Mobile responsive, quick to set up, with 24/7 live chat support. more Infinite Scroll or Load More button for Shopify collection pages Lazy Load images to improve collection browsing performance Scroll to Top button with preserved product loading history Customize scroll bar colors and styling to match your store 24/7 live chat support for setup and troubleshooting
Turn collection pages into infinite scroll and add a customizable scroll to top button in 1 click. Scrolly adds seamless infinite scroll to your collection pages, automatically loading more products as customers browse. Replace pagination with endless scrolling or a load more button, enhance the shopping experience and boost your sales & conversions. Scrolly includes a customizable floating back to top button with a custom SVG icon and multiple icon presets. You can adjust color, hover color, shape, size, position, padding and animation. Works on mobile, supports all themes, no code required. Scrolly adds seamless infinite scroll to your collection pages, automatically loading more products as customers browse. Replace pagination with endless scrolling or a load more button, enhance the shopping experience and boost your sales & conversions. Scrolly includes a customizable floating back to top button with a custom SVG icon and multiple icon presets. You can adjust color, hover color, shape, size, position, padding and animation. Works on mobile, supports all themes, no code required. more Make more money with Infinite Scroll & Load More products on collection pages Enhance shopping experience with a customizable floating Scroll to Top button Seamless endless scrolling enhances the shopping experience & product discovery Upload custom SVG icon or use our presets. Adjust color, size, animation & more Mobile responsive, one-click install, supports all themes. No code required
Calculation based option pricing for customizable products. Advanced product pricing made simple. Perfectly price your customizable and measurement-based products. Specifically designed for sticker, blind, wallpaper, cabinet makers, fabric, counters & parts stores. Use mathematical pricing formulas to calculate option, quantity, weight & discount pricing without limits. Pricing table and vlookups support make complicated pricing easy. Show discounted pricing for options with quantity breaks. Start pricing your products perfectly, get Option Price Calculator. Perfectly price your customizable and measurement-based products. Specifically designed for sticker, blind, wallpaper, cabinet makers, fabric, counters & parts stores. Use mathematical pricing formulas to calculate option, quantity, weight & discount pricing without limits. Pricing table and vlookups support make complicated pricing easy. Show discounted pricing for options with quantity breaks. Start pricing your products perfectly, get Option Price Calculator. more Price custom & measurement-based products more accurately than your competition Use pricing tables and formulas for more dynamic & accurate option pricing. Use product & variant metafields as variables in your calculations and formulas. Unlimited product options: Swatch, Upload, Multi-select, Dropdown, Radio & more. Create rules to show and hide options based on options selected.
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About Custom CSS Apps for Shopify
Custom CSS apps are essential tools for Shopify merchants looking to enhance their store's functionality and improve customer experience. These specialized applications help store owners streamline operations, increase sales, and provide better service to their customers.
When choosing a custom css app for your Shopify store, consider factors such as features, pricing, customer support, and compatibility with your theme and other apps. Reading reviews from other merchants can also provide valuable insights into the app's performance and reliability.
The apps listed on this page represent some of the best custom css solutions available in the Shopify App Store. Each has been selected based on its functionality, user ratings, and overall value for Shopify merchants.