Take bookings with an easy scheduling calendar. All-in-one booking app for services and events. Meety is an appointment booking solution designed to add a customizable scheduling calendar to your products or services. With seamless calendar sync and native integrations (Zoom, Google Meet, Outlook, Teams, Klaviyo, Zapier), Meety supports subscriptions, bundles, multi-booking, deposits, and automated waitlists. Your business can deliver a fully tailored customer experience with multi-language support, custom question forms, personalized email notifications, and a dedicated customer portal. Meety is an appointment booking solution designed to add a customizable scheduling calendar to your products or services. With seamless calendar sync and native integrations (Zoom, Google Meet, Outlook, Teams, Klaviyo, Zapier), Meety supports subscriptions, bundles, multi-booking, deposits, and automated waitlists. Your business can deliver a fully tailored customer experience with multi-language support, custom question forms, personalized email notifications, and a dedicated customer portal. more Add "Schedule your time" button to product, allow customer to book appointment Set up appointment duration, buffer time, preparation time, limit timeslot Flexible options: Group, Subscription, No check-out booking, Waitlist, Deposit Automated email notifications. 2-way sync with Google Calendar, Zoom, Outlook Virtual & in-person appointment. Customer portals for reschedule, cancel booking
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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Elevate sales effortlessly: Product Countdown timers for FOMO, urgency, and increased conversions. Create the effect of Urgency, Scarcity, and FOMO in sales by adding a countdown widget, aka deadline time tracker & stopwatch. Display timers strategically as top/bottom bars, on product pages, or collections. Select design presets for quick setup to match your theme and translate text to match your store language. Improve conversion rates and average order value (AOV) of Flash Sales, Seasonal Sales, Daily Deals, Promotions, Holiday Sales, Product Releases, and Launches. Great for Ramadan Sales Create the effect of Urgency, Scarcity, and FOMO in sales by adding a countdown widget, aka deadline time tracker & stopwatch. Display timers strategically as top/bottom bars, on product pages, or collections. Select design presets for quick setup to match your theme and translate text to match your store language. Improve conversion rates and average order value (AOV) of Flash Sales, Seasonal Sales, Daily Deals, Promotions, Holiday Sales, Product Releases, and Launches. Great for Ramadan Sales more Encourage store visitors and motivate buyers to buy now with fear of missing out You can make the sales countdown timer appear for specific products only Use an announcement bar timer (top bar or bottom) for Storewide Sales Add countdowns to many places on your websites to highlight limited-time offers Supports all pages, 1-click setup, no coding required, many converting presets
Story Style Menu to feature products, collections and links in Instagram like icon based navigation Great for shops who want to create social media story like menu to feature products, collections, pages, and links. Circle or square thumbnail navigation menu to redirect customers from collections to specific items. Familiar product menu like Instagram, Facebook, or TikTok stories to reduce bounce rate and improve conversion. Create custom menu items with icons, pictures, gifs, titles, and links that match the design and colors of your website. Place the menu anywhere in the store. Great for shops who want to create social media story like menu to feature products, collections, pages, and links. Circle or square thumbnail navigation menu to redirect customers from collections to specific items. Familiar product menu like Instagram, Facebook, or TikTok stories to reduce bounce rate and improve conversion. Create custom menu items with icons, pictures, gifs, titles, and links that match the design and colors of your website. Place the menu anywhere in the store. more Display menu on mobile and desktop for a seamless browsing experience Allow visitors browse faster, discover new collections, increase conversion rate Full customization of images, titles, colors, fonts, margins, locations etc. Engage visitors with a much better than conventional text-based hamburger menu Seamlessly integrate circle, square story menu bars into your Shopify 2.0 theme
Enhance your store with a customizable floating sidebar for promotions, discounts, and announcements Enhance your online store with a floating tab that opens a customizable sidebar. Place it on the left or right side of your website to display promotions, discounts, and announcements. Personalize text, background, and colors. The sidebar includes title, body, footer and even an image sections for detailed messaging. Fully compatible with desktop and mobile. Easy to integrate and perfect for increasing customer engagement. Enhance your online store with a floating tab that opens a customizable sidebar. Place it on the left or right side of your website to display promotions, discounts, and announcements. Personalize text, background, and colors. The sidebar includes title, body, footer and even an image sections for detailed messaging. Fully compatible with desktop and mobile. Easy to integrate and perfect for increasing customer engagement. more Customizable Floating Tab: Create an eye-catching floating tab on your site Fully Customizable Sidebar: Design your sidebar to match your brand perfectly Multi-Device Compatibility: Accessible promotions on desktop and mobile Promote discounts, updates, sales, announcements, messages, images and more Easy Integration: Integrate quickly without any coding needed
AI-powered personalisation, upsells, and dynamic merchandising to boost conversions. Mercury is a no-code, drag-and-drop solution for delivering personalised product recommendations, upsells, and cross-sells. It enhances every step of the shopping journey, from product discovery to the cart. With AI-driven search and dynamic merchandising, Mercury ensures your store showcases the most relevant products at the right time, boosting conversions and AOV. Integrate seamlessly with your existing stack and track real-time analytics for optimisation. Mercury is a no-code, drag-and-drop solution for delivering personalised product recommendations, upsells, and cross-sells. It enhances every step of the shopping journey, from product discovery to the cart. With AI-driven search and dynamic merchandising, Mercury ensures your store showcases the most relevant products at the right time, boosting conversions and AOV. Integrate seamlessly with your existing stack and track real-time analytics for optimisation. more AI Personalisation: Tailor product recommendations based on shopper behaviour Upsell & Cross-Sell Zones: Increase AOV with upsells from product pages to cart Dynamic Merchandising: Automatically display relevant products based on data Inline Banners: Scheduled banners (image/video) on grids & category pages AI-Powered Search: Real-time autocomplete & filters for faster product discovery
Compare product specifications with ease using an interactive UI for easy shopping decisions. Easily enable product comparison on your store with CompareMate. Add a "Compare" button to product pages and grids, letting customers select items for comparison. Products are shown in an interactive drawer and can be compared side-by-side on a dedicated comparison page. Customers can add products to the cart directly from the comparison page, or remove items with a single click. A bulk editor makes it easy for merchants to manage comparison data across products. Easily enable product comparison on your store with CompareMate. Add a "Compare" button to product pages and grids, letting customers select items for comparison. Products are shown in an interactive drawer and can be compared side-by-side on a dedicated comparison page. Customers can add products to the cart directly from the comparison page, or remove items with a single click. A bulk editor makes it easy for merchants to manage comparison data across products. more Add "Compare" buttons to product pages and grids. Interactive drawer shows selected items for comparison. Side-by-side product comparison on a dedicated page. Add items to the cart directly from the compare page. Bulk editor for efficient comparison data management.
Customize a sticky mobile menu bar to enhance your shop's navigation experience. MeroxIO Sticky Mobile Menu Bar is designed to improve your shop's mobile navigation. This app allows Shopify store owners to add a customizable sticky menu bar at the bottom of mobile screens. You can select icons and link each to different sections of your store, streamlining the user experience and potentially increasing engagement. The app's intuitive design makes it easy to integrate and customize within your store's theme, offering a seamless shopping experience for your customers. MeroxIO Sticky Mobile Menu Bar is designed to improve your shop's mobile navigation. This app allows Shopify store owners to add a customizable sticky menu bar at the bottom of mobile screens. You can select icons and link each to different sections of your store, streamlining the user experience and potentially increasing engagement. The app's intuitive design makes it easy to integrate and customize within your store's theme, offering a seamless shopping experience for your customers. more Customizable Icons: Tailor menu icons to fit your store's style. Easy Link Integration: Direct customers with clickable icons. Sticky Navigation: Constant menu access for easy usability. Mobile Optimized: Designed for an excellent mobile experience Seamless Integration: Effortlessly blends with your store theme
Help shoppers find products they love with beautiful dropdown menus for mobile and desktop. Put your best foot forward with beautiful and professional menu templates. Meteor uses your existing Shopify navigation settings for lightning-fast setup time. Customize the design to your liking, and preview each of your menus before you publish. Show off product images in mobile and desktop menus, and help shoppers discover great products without leaving your home page. Link any resource from Shopify: products, collections, blogs, or pages. Multi-region support for menu items and currency! Put your best foot forward with beautiful and professional menu templates. Meteor uses your existing Shopify navigation settings for lightning-fast setup time. Customize the design to your liking, and preview each of your menus before you publish. Show off product images in mobile and desktop menus, and help shoppers discover great products without leaving your home page. Link any resource from Shopify: products, collections, blogs, or pages. Multi-region support for menu items and currency! more Menus in minutes! Use your store's existing menus to streamline setup Variety of beautiful templates for both desktop and mobile Display product or collection images directly in your store's main menu Multi-region support: translated menu items and local currency Customer-friendly UX helps customers easily navigate different menu tiers
高い視認性のポップアップでセット購入率アップ！サブスク商品へのアップセルも可能 【1. 絶妙なタイミングでのアップセルバナー表示】 商品ページでカートに追加する瞬間にアップセルバナーを表示します。お客様の購買意欲が高まるこのタイミングを活用します。 【2.目立つポップアップデザイン】 注目を集めるポップアップデザインを採用。視認性が高いため、アップセルの成功率向上が期待できます。CSSでのデザイン変更も可。 【3.かんたん設定】 専門知識は不要です。直感的な操作で、数回のクリックでECサイトにアップセル機能を導入できます。 【4.定期購入オファーにも対応】 単発商品だけでなく、定期購入オファーへのアップセルも可能。お客様の継続的な利用を促し、安定した収益につなげます。 【1. 絶妙なタイミングでのアップセルバナー表示】 商品ページでカートに追加する瞬間にアップセルバナーを表示します。お客様の購買意欲が高まるこのタイミングを活用します。 【2.目立つポップアップデザイン】 注目を集めるポップアップデザインを採用。視認性が高いため、アップセルの成功率向上が期待できます。CSSでのデザイン変更も可。 【3.かんたん設定】 専門知識は不要です。直感的な操作で、数回のクリックでECサイトにアップセル機能を導入できます。 【4.定期購入オファーにも対応】 単発商品だけでなく、定期購入オファーへのアップセルも可能。お客様の継続的な利用を促し、安定した収益につなげます。 more 絶妙なタイミングで表示されるポップアップの為、アップセル率向上が期待できます。 日本製アプリで唯一のサブスクリプション商品へのアップセル/クロスセスが可能。 ノーコードで簡単設定 あんしんの日本語対応！導入前の検討段階から、導入後も使い方やカスタマイズのご相談など、メールやで丁寧にサポート。
10+ bundle types: Mix and Match bundle builder, Build your own bundle (BYOB), Build a box, Add-ons. Grow AOV with bundles shoppers actually buy. Create “Build a Box” and “Mix & Match” bundles, set volume discounts by quantity or spend, and add free gifts when shoppers hit a threshold. Motivate completion with badges, a progress bar and "unlock next" messages. Track sales with conversion funnel analytics. Also supports 10+ bundle types (fixed bundles, quantity breaks, BOGO/Buy X Get Y, FBT, product add-ons, upsell pop-up, product recommendations & more). No-code setup → fast to launch. Grow AOV with bundles shoppers actually buy. Create “Build a Box” and “Mix & Match” bundles, set volume discounts by quantity or spend, and add free gifts when shoppers hit a threshold. Motivate completion with badges, a progress bar and "unlock next" messages. Track sales with conversion funnel analytics. Also supports 10+ bundle types (fixed bundles, quantity breaks, BOGO/Buy X Get Y, FBT, product add-ons, upsell pop-up, product recommendations & more). No-code setup → fast to launch. more Build a Box & Build your own bundle (BYOB) that shoppers love to buy Volume discounts by quantity or spend amount to grow AOV Free gifts by box size or by spend and quantity goals to encourage bigger carts Badges, progress bar, "unlock next" and low-stock messages to boos AOV 10+ bundle types: fixed bundles, BOGO/Buy X Get Y, quantity breaks, add‑ons
Add free shipping bar to the store. Set country specific free shipping messages for global customer Geo Shipping Bar adds a free shipping bar to your website. You can set country or continent specific messages to target international customers. You can customize the look and feel of the free shipping bar to match your theme. Welcome customers from different countries warmly to your international business by showing localized free shipping messages. You can configure different messages for the shipping progress bar state. Preview the free shipping bar message before making it live. Geo Shipping Bar adds a free shipping bar to your website. You can set country or continent specific messages to target international customers. You can customize the look and feel of the free shipping bar to match your theme. Welcome customers from different countries warmly to your international business by showing localized free shipping messages. You can configure different messages for the shipping progress bar state. Preview the free shipping bar message before making it live. more Customize the shipping bar using background color, font and timer Set different messages for customers coming from different countries/ continents Works with the multi country shipping limits set in your admin settings
Easily create Lookbooks with product rollovers and links directly to your products to purchase The Lookbook App • Easy setup with multiple themes to display • Link to purchase products • Customise your markers that display and connect your products (on mouse over or touch). • Customise display info for each product (Title, Price, Image). • Link markers to any product or URL. • Simple drag and drop interface to order the pages in each Lookbook. • Select any image assigned to a product as the rollover image for your marker. The Lookbook App • Easy setup with multiple themes to display • Link to purchase products • Customise your markers that display and connect your products (on mouse over or touch). • Customise display info for each product (Title, Price, Image). • Link markers to any product or URL. • Simple drag and drop interface to order the pages in each Lookbook. • Select any image assigned to a product as the rollover image for your marker. more Easily create Lookbooks with product rollovers to purchase Responsive for all devices with multiple themes. Create unlimited Lookbooks with no coding required.
Unified free gift with purchase + BOGO (buy one get one free) + upsell/cross sell app to boost sales The has a simple goal: to help your store drive incremental sales & conversions with a measurable ROI. Use the app to show all kinds of Buy X Get Y offers, discounts, and recommendations across the buying journey right from the product pages to the cart to checkout to post checkout. Customize the design & experience of the app's widgets (+translate text) exactly as you want & use our robust eligibility system to create personalized buyer experiences. The has a simple goal: to help your store drive incremental sales & conversions with a measurable ROI. Use the app to show all kinds of Buy X Get Y offers, discounts, and recommendations across the buying journey right from the product pages to the cart to checkout to post checkout. Customize the design & experience of the app's widgets (+translate text) exactly as you want & use our robust eligibility system to create personalized buyer experiences. more Improve cart’s conversion by combining cart upsells with a tiered progress bar Offer free gift with purchase of specific products, cart values etc Setup upsells, cross sells & quantity discounts across the entire buying journey Customize the design & user experience of widgets/popups exactly as you want Crete Buy X Get Y, BOGO (buy 1 get 1 free) offers for specific customers/product
Boost sales with shoppable Instagram Reels, TikTok videos & UGC — tag products to shop the look Turn your Instagram feed, Reels, TikTok videos, and UGC into shoppable videos on your store. Tag products on every post, Reel, and video so shoppers can shop the look directly from social content. Display shoppable videos and galleries in grid, slider, masonry, coverflow, or highlight layouts, auto-sync across multiple Instagram & TikTok accounts, and see which Reels and UGC videos drive the most sales with built-in analytics. Easy setup, no coding & dedicated support from our friendly team. Turn your Instagram feed, Reels, TikTok videos, and UGC into shoppable videos on your store. Tag products on every post, Reel, and video so shoppers can shop the look directly from social content. Display shoppable videos and galleries in grid, slider, masonry, coverflow, or highlight layouts, auto-sync across multiple Instagram & TikTok accounts, and see which Reels and UGC videos drive the most sales with built-in analytics. Easy setup, no coding & dedicated support from our friendly team. more Shoppable Reels & Instagram posts — tag products for instant sales Shoppable UGC videos & galleries — turn real customer content into sales Product tagging on posts, Reels & videos — unlimited products Auto-sync Instagram feed & TikTok videos — no manual updates Grid, slider, coverflow, highlight, masonry layouts with video & feed analytics
Reduce returns & boost conversions with customizable size charts & AI size recommendations Sizing confusion costs apparel sales. When shoppers aren't sure about fit, they leave or return. MP Size Chart uses AI-powered size recommendations to instantly guide shoppers to their perfect fit. Plus, show customizable size charts on product pages, from fashion & footwear to accessories & beyond. Add unlimited size charts with images, videos & tabs. Easy CSV import for bulk uploads. 30+ size chart templates & auto unit conversion. Plus one size guide page. Switching apps? We'll help migrate. Sizing confusion costs apparel sales. When shoppers aren't sure about fit, they leave or return. MP Size Chart uses AI-powered size recommendations to instantly guide shoppers to their perfect fit. Plus, show customizable size charts on product pages, from fashion & footwear to accessories & beyond. Add unlimited size charts with images, videos & tabs. Easy CSV import for bulk uploads. 30+ size chart templates & auto unit conversion. Plus one size guide page. Switching apps? We'll help migrate. more AI-powered size recommendations help shoppers find their perfect fit Quick setup — 30+ size chart templates with images, videos, tabs & tables Import unlimited size charts via CSV — bulk upload made easy 20+ languages & auto unit conversion for global stores One size guide page shows all charts — auto-synced, always fresh
Add unlimited product options, variants & price add-ons with advanced conditional logic. No coding. Shopify limits products to 100 variants MPO - Multiple Product Options removes that barrier. Add unlimited custom product options to any product: text fields, color & image swatches, file uploads, date pickers, dropdowns, and 20+ more field types. Collect personalized order details like names, logos, engravings, or monograms. Set price add-ons per option and use AND/OR conditional logic to show only the right fields. All data appears directly in your order admin. No coding needed. Shopify limits products to 100 variants MPO - Multiple Product Options removes that barrier. Add unlimited custom product options to any product: text fields, color & image swatches, file uploads, date pickers, dropdowns, and 20+ more field types. Collect personalized order details like names, logos, engravings, or monograms. Set price add-ons per option and use AND/OR conditional logic to show only the right fields. All data appears directly in your order admin. No coding needed. more 20+ field types: text, swatch, file upload, date, color picker & more Advanced AND/OR conditional logic to show or hide fields dynamically Price add-ons per option - charge extra for custom variants or upgrades Assign option sets by product, tag, vendor, type, URL, or handle All custom field data visible on orders, packing slips & email notifications
5-in-1 Sticky Add to Cart App to Improve Sales, Conversion, AOV, & Reduce cart abandonment. MS Sticky Add to Cart is designed to help increase traffic conversion rates, AOV, and sales by making the add-to-cart and Buy now buttons super easy for customers to find and use. Sticky add to cart allows shoppers around the site to quickly add products to their cart and go through checkout without friction. The Cart Booster bar is easy to find and helps reduce cart abandonment. The button animations are attention-grabbing and help customers skip cart straight to checkout MS Sticky Add to Cart is designed to help increase traffic conversion rates, AOV, and sales by making the add-to-cart and Buy now buttons super easy for customers to find and use. Sticky add to cart allows shoppers around the site to quickly add products to their cart and go through checkout without friction. The Cart Booster bar is easy to find and helps reduce cart abandonment. The button animations are attention-grabbing and help customers skip cart straight to checkout more Sticky Add to Cart and Buy Now button on Product page and collection page A Floating Cart Booster - customer can easily access cart from any pages Sticky Checkout Bar on cart for Quick & faster checkout Mini Cart Icon on Collection Page for Instant checkout One Click Checkout like Amazon for Faster order placing
Create step-by-step product flows. Help customers choose add-ons and customize products. Use MultiStep to create guided shopping flows, letting customers make one choice at a time — for example: color, size, material — while suggesting optional add-ons along the way. Break a single product’s options into steps, or guide customers through multiple products in featured assortments. Collect custom inputs and set logic rules to control what appears at each stage. Show in your store as a pop-up, embedded section, or product page add-on. Use MultiStep to create guided shopping flows, letting customers make one choice at a time — for example: color, size, material — while suggesting optional add-ons along the way. Break a single product’s options into steps, or guide customers through multiple products in featured assortments. Collect custom inputs and set logic rules to control what appears at each stage. Show in your store as a pop-up, embedded section, or product page add-on. more Simplify product options into guided choices Step through multiple products in kits and assortments Suggest relevant add-ons at the right moment Collect custom inputs like text, uploads, and toggles Control products that show with flexible logic rules
Set Cart Goals with a Free Shipping Progress Bar, Cart Upsell Products, Get Higher AOV and Sales. Increase your average order value with the MVR Free Shipping Bar! Set a goal and show the progress bar to your customers! Offer Free Shipping, Discount, or a Gift once they reach the goal. Customers love the feeling of completion and the MVR free shipping bar does just that! It boosts your sales just by adding it to your product or cart page. Choose any of the high-converting designs or create your own! It’s so easy to set up! Don’t wait, install now! Increase your average order value with the MVR Free Shipping Bar! Set a goal and show the progress bar to your customers! Offer Free Shipping, Discount, or a Gift once they reach the goal. Customers love the feeling of completion and the MVR free shipping bar does just that! It boosts your sales just by adding it to your product or cart page. Choose any of the high-converting designs or create your own! It’s so easy to set up! Don’t wait, install now! more Set progress bar on product or cart page Multi-currency and goal customization Upsell products and unlimited views Full progress bar design customisation to fit your brand Developer support
Improve website navigation & UX with mega menus, tab bars, slide menus, and more. Default website menus are often simple and outdated, making it harder for visitors to find products or key pages. Poor navigation slows browsing and hurts the shopping experience. Navi+ helps you upgrade website navigation with modern styles like mega menus, tab bars, slide (hamburger) menus, grid menus, and floating action buttons for quick access or support. Use ready-made templates and drag-and-drop editing to build navigation that improves usability and SEO. Key features of Navi+: Default website menus are often simple and outdated, making it harder for visitors to find products or key pages. Poor navigation slows browsing and hurts the shopping experience. Navi+ helps you upgrade website navigation with modern styles like mega menus, tab bars, slide (hamburger) menus, grid menus, and floating action buttons for quick access or support. Use ready-made templates and drag-and-drop editing to build navigation that improves usability and SEO. Key features of Navi+: more Replace basic theme menus with modern navigation styles Add mega menus, tab bars, slide (hamburger) menus, grid menus, and more Create a clean, app-like navigation and browsing experience Use ready-made templates without coding Fast, SEO-friendly, and compatible with most Shopify themes
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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.