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Custom rules Shopify Apps

Enhance your Shopify store with the best Custom rules apps. Get insights on features, pricing, and user reviews for 2026.

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We've analyzed thousands of custom rules apps to identify the top performers based on ratings and install counts.

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Present your negotiated LTL freight rates with TForce as options in the checkout process. Connect your TForce account and use your negotiated rates to offer real-time LTL freight quotes on orders that can't be shipped, or are too expensive to ship through postal and parcel networks. Offer options for services like liftgate delivery, and residential delivery. Capture revenue 24/7 and stop requiring customers to call for a freight quote before placing an order. Connect your TForce account and use your negotiated rates to offer real-time LTL freight quotes on orders that can't be shipped, or are too expensive to ship through postal and parcel networks. Offer options for services like liftgate delivery, and residential delivery. Capture revenue 24/7 and stop requiring customers to call for a freight quote before placing an order. more Accurately quote orders with multiple items that have different freight classes. Support for orders sourced from multiple warehouses or drop ship locations. Supported origins: USA. Supported destinations: Canada, USA.

2.2(Reviews)

Multi TikTok Shop Integration — Efficiently Sync Products, Inventory, Orders, Fulfilment & Returns TikTok Shop Integration: Simplify your e-commerce management with our seamless integration for Shopify and TikTok Shop. Effortlessly sync products and inventory in real-time across multiple TikTok Shops. Say goodbye to order cancellations and operational headaches. Our solution ensures smooth updates of products, images, SKUs, barcodes, prices, categories, and variants, delivering an optimal management experience. Streamline your operations and elevate your online store management today! TikTok Shop Integration: Simplify your e-commerce management with our seamless integration for Shopify and TikTok Shop. Effortlessly sync products and inventory in real-time across multiple TikTok Shops. Say goodbye to order cancellations and operational headaches. Our solution ensures smooth updates of products, images, SKUs, barcodes, prices, categories, and variants, delivering an optimal management experience. Streamline your operations and elevate your online store management today! more Seamlessly Integrate & Synchronize Multiple TikTok Shop with Your Shopify Store Dual Functionality: Shopify to TikTok and TikTok to Shopify Inventory Sync Auto Mapping: Sync Products & Inventory with our AI Mapping Tool for Categories Expand Your Reach by Offering Multi-Currency & Multi-Language Support on TikTok Customize TikTok Products Listing Directly Within App using Power Editor

4.9(Reviews)

Add a tip, donation, or upsell option to your store. Tip Cup lets your customers add gratuity, donations, or custom upcharges anywhere on your site. Bonus: Tip Cup is compatible with 3rd party payment providers (PayPal, Shop Pay, Google Pay, Apple Pay, etc). Tip Cup lets your customers add gratuity, donations, or custom upcharges anywhere on your site. Bonus: Tip Cup is compatible with 3rd party payment providers (PayPal, Shop Pay, Google Pay, Apple Pay, etc). more Accept cashless tips by adding a tip button to your site. Easily change the design to match your store front. You can make upsells or accept donations by changing the wording.

3.7(Reviews)

Maximize sales funnel with post-purchase upsells, custom thank you page & checkout upsell Boost your Shopify store's potential with our app, designed to enhance customer experience and maximize revenue. Add custom displays to your checkout and thank you pages to provide a personalized touch. Create effective upsell funnels seamlessly on both post-purchase and thank you pages. Our app ensures upselling opportunities are always available, prioritizing the thank you page for consistent performance and higher conversion rates. Turn every transaction into a growth opportunity with ease! Boost your Shopify store's potential with our app, designed to enhance customer experience and maximize revenue. Add custom displays to your checkout and thank you pages to provide a personalized touch. Create effective upsell funnels seamlessly on both post-purchase and thank you pages. Our app ensures upselling opportunities are always available, prioritizing the thank you page for consistent performance and higher conversion rates. Turn every transaction into a growth opportunity with ease! more Set up multiple post purchase upsell funnels with different customer segments Edit your thank you page to boost branding and drive product upsells seamlessly Enhance checkout (Plus only) with checkout editor for a user-friendly experience Multiple checkout blocks and thank-you page widgets to personalize your store Multiple post purchase survey question types: Feedback, Rating, Text, ...

4.5(Reviews)

Offer Free Gift with purchase, cart progress bar, auto add to cart, Buy X Get Y for cart upsell Tek Labs helps boost AOV with features like free gifts, cart upsell, discount volume, and upsell promotions. Free gifts are automatically added or removed from the cart based on your condition settings, help you launch new products, clear old inventory, and promote product samples. Cart upsell support rewards such as free shipping, order discounts or free gift to motivate customers to spend more. Lastly, the bundle product will be shown inside a pop-up when clicking the checkout or add button. Tek Labs helps boost AOV with features like free gifts, cart upsell, discount volume, and upsell promotions. Free gifts are automatically added or removed from the cart based on your condition settings, help you launch new products, clear old inventory, and promote product samples. Cart upsell support rewards such as free shipping, order discounts or free gift to motivate customers to spend more. Lastly, the bundle product will be shown inside a pop-up when clicking the checkout or add button. more Free Gifts with purchase/order qty/order value: buy x get y, buy one get one Cart upsell by cart progress bar with free gift, free shipping, order discount Auto add to cart and auto remove free gift or manually select gifts, rewards Volume discounts for different products with multiple conditions Customize free gift displays: gift icon style, text style, gift animation,...

4.8(Reviews)

Protect your store, earn trust and avoid chargebacks with an AI-based Terms and Conditions Checkbox. 'How to add terms and conditions in Shopify?' is a question we're getting asked a lot. Without clear consent, chargebacks and legal risks become real problems. TnC helps with that by adding a mandatory checkbox to your store, making sure customers agree to your policies before checkout. Whether it's a holiday promotion terms or GDPR age verification privacy policy, the checkbox helps you stay protected. One-click installation, works seamlessly with your theme, and builds trust where it matters. 'How to add terms and conditions in Shopify?' is a question we're getting asked a lot. Without clear consent, chargebacks and legal risks become real problems. TnC helps with that by adding a mandatory checkbox to your store, making sure customers agree to your policies before checkout. Whether it's a holiday promotion terms or GDPR age verification privacy policy, the checkbox helps you stay protected. One-click installation, works seamlessly with your theme, and builds trust where it matters. more Require consent for terms of service, privacy policy, policies and contracts Show the checkbox for specific products & countries to meet legal requirements Logs date & time when the I agree to terms checkbox is checked before checkout Require consent in contact form, newsletter, login/sign up pages & footer menu Works with express checkout button payment gateway (PayPal, Apple Pay, Glowroad)

4.9(Reviews)

Sync Inventory and Import Amazon orders in Real-Time with Amazon's latest Reliable Technology. Maximize your eCommerce efficiency with Amazon Easy Tool! Seamlessly import all orders—Prime, FBA, FBM, handmade, custom—into your Shopify back-office in real-time. Instantly sync stock and process orders to delight customers and uphold stellar seller metrics. Benefit from White Glove Implementation for tailored needs. Experience instant, flawless communication between Amazon and Shopify, giving you immediate control and visibility over all transactions. Perfect your online business today! Maximize your eCommerce efficiency with Amazon Easy Tool! Seamlessly import all orders—Prime, FBA, FBM, handmade, custom—into your Shopify back-office in real-time. Instantly sync stock and process orders to delight customers and uphold stellar seller metrics. Benefit from White Glove Implementation for tailored needs. Experience instant, flawless communication between Amazon and Shopify, giving you immediate control and visibility over all transactions. Perfect your online business today! more Sync your inventory and Amazon orders in Shopify Orders FBM, FBA & Handmade Instantly Process & Fulfill Orders from Shopify Back-Office to Amazon World Wide Amazon Customer & Custom message Data Integration to Shipping Orders Accurate Price & Tax rate in Shopify-control all online revenue in 1 Place Only! Improve your Seller Metrics and Keep your Local & International clients Happy

4.6(Reviews)

Explore a new way of engaging your customers with auctions and Make an Offer Auctions are a tried and true selling strategy to maximize the amount of revenue generated for a unique product. Auction Plus facilitates bidding, notifies your customers of their winnings and directs them to checkout- automatically. Schedule your auctions in advance to generate buzz for your products, engage with your customers and fuel word of mouth referrals. NEW Convert undecided shoppers into buyers with Make an Offer. Turn products into conversations with chat-like negotiation experiences Auctions are a tried and true selling strategy to maximize the amount of revenue generated for a unique product. Auction Plus facilitates bidding, notifies your customers of their winnings and directs them to checkout- automatically. Schedule your auctions in advance to generate buzz for your products, engage with your customers and fuel word of mouth referrals. NEW Convert undecided shoppers into buyers with Make an Offer. Turn products into conversations with chat-like negotiation experiences more Add auctions and Make an Offer to your store, no coding required Provide your customers with a hassle-free way to bid with auto-bidding Schedule your auctions to build anticipation for your products Automatically notify your customers of their winnings and send them to checkout North American-based live chat and email support

4.9(Reviews)

Create smart checkout rules by modifying cart line items and validating checkout — no code. Tweakday Checkout helps Shopify merchants create powerful checkout rules using line item logic and checkout validation. Automatically modify cart items by adding free gifts, warranties, or insurance, and control pricing at the line-item level. Prevent invalid orders by blocking checkout when cart, product, customer, or address conditions are not met. Show clear error messages before order placement. Built with Shopify Functions for fast, secure performance without coding. Tweakday Checkout helps Shopify merchants create powerful checkout rules using line item logic and checkout validation. Automatically modify cart items by adding free gifts, warranties, or insurance, and control pricing at the line-item level. Prevent invalid orders by blocking checkout when cart, product, customer, or address conditions are not met. Show clear error messages before order placement. Built with Shopify Functions for fast, secure performance without coding. more Create rules to add, remove, or modify cart line items dynamically. Block checkout instantly when order conditions are not satisfied. Show clear error messages before customers place an order. Use cart, product, customer, and address-based conditions. Powered by Shopify Functions for secure, high-speed checkout.

5.0(Reviews)

Create and sort collections in various ways with advanced analytics Our app offers versatile collection management, allowing you to create and sort collections in various ways, including auto-updating them based on criteria such as "Back in Stock", "Best Selling for 90 days", and "New Arrival". You can also export products in a collection to CSV as well as duplicate or update existing automated collections. In addition, our analytics feature provides a direct look at which collections are performing the best for you. Our app offers versatile collection management, allowing you to create and sort collections in various ways, including auto-updating them based on criteria such as "Back in Stock", "Best Selling for 90 days", and "New Arrival". You can also export products in a collection to CSV as well as duplicate or update existing automated collections. In addition, our analytics feature provides a direct look at which collections are performing the best for you. more Create collections based on various criteria such as revenue, profit, metafields Duplicate collections and update rules for existing automated collections Make the most of your data when creating and sorting your collections Configure collection creation to run on-demand, daily, or at chosen frequency

4.3(Reviews)

Stop PO Box orders at checkout for successful deliveries and lower shipping cost. 1-click setup. If you're a merchant tired of dealing with lost packages, failed deliveries, or the extra costs associated with reshipping, then Ultimate PO Box Blocker is for you. Whether you're a small business owner or run a large e-commerce operation, our app is designed to make your shipping process more efficient and reliable. The app needs no manual setup for seamless integration but offers advanced customization options. Take control of your shipping process today. If you're a merchant tired of dealing with lost packages, failed deliveries, or the extra costs associated with reshipping, then Ultimate PO Box Blocker is for you. Whether you're a small business owner or run a large e-commerce operation, our app is designed to make your shipping process more efficient and reliable. The app needs no manual setup for seamless integration but offers advanced customization options. Take control of your shipping process today. more Auto-block PO Boxes carriers like FedEx, UPS, DHL can't deliver to. Eliminate time, effort, cost resolving address issues after purchase. Real-time validation flags undeliverable addresses during checkout. Simple installation with seamless integration—no setup needed. Advanced options to customize settings for specific shipping needs.

5.0(Reviews)

Highly customizable sliding cart drawer with upsells, progress bar, unlockable free gifts and more. Unicart replaces your default cart page with a highly customizable sliding cart drawer. It offers upsells, cross sells, a dynamic sales progress bar, spend tiers to unlock free items, multi language support and more. Unicart can be completely customized to allow for all types of custom features and custom designs. It supports different design templates and you can schedule publish them anytime (Best for sales days). Unicart is developer friendly and can be customised to meet every requirement. Unicart replaces your default cart page with a highly customizable sliding cart drawer. It offers upsells, cross sells, a dynamic sales progress bar, spend tiers to unlock free items, multi language support and more. Unicart can be completely customized to allow for all types of custom features and custom designs. It supports different design templates and you can schedule publish them anytime (Best for sales days). Unicart is developer friendly and can be customised to meet every requirement. more Cross-sell and upsell by showcasing relevant products based on items in the cart Sales progress bar to motivate customers to spend more to unlock special rewards Allow customer's to unlock free items in their cart at specific spend tiers Access to completely customize the cart to your exact design and function needs Supports subscriptions, integrates with apps like PageFly, BOLD, Shogun and more

5.0(Reviews)

Boost AOV with a Customizable Slide Cart, Smart Cross-Sells, Targeted Upsells and Gamification Unicorn is a powerful cart app designed to drive more revenue for your store. A suite of powerful upsell tools to optimise your store’s Order Value (AOV) and conversion rates. With built-in upsell, cross-sell, and reward features, Unicorn turns every cart interaction into an opportunity to delight customers and drive more sales. Built by ecommerce founders for ecommerce founders. Unicorn is a powerful cart app designed to drive more revenue for your store. A suite of powerful upsell tools to optimise your store’s Order Value (AOV) and conversion rates. With built-in upsell, cross-sell, and reward features, Unicorn turns every cart interaction into an opportunity to delight customers and drive more sales. Built by ecommerce founders for ecommerce founders. more Boost AOV with Targeted Upsells, Cross-sells, Upgrade to Subscription and more Increase Conversion: BOGO, Free Gifts and Stackable Discounts + Countdown timers Gamify Shopping with Tiered Rewards and Fully Customizable Progress Bars Create your own Shipping Protection Upsell as tick box or in the checkout button Easy to Fully Customize and Perfectly Match Your Brand. Aesthetic Looking Carts.

5.0(Reviews)

Upcart — custom slide cart with full design control to increase AOV and reduce cart abandonment Unlike basic cart drawer apps, Upcart turns your cart into a revenue-driving touchpoint with in-cart upsells, cross-sells, rewards, and add-ons—without redirecting shoppers or requiring multiple apps. Designed for fashion, food & beverage, beauty, and other DTC brands, Upcart matches your storefront and works seamlessly across desktop and mobile. Unlike basic cart drawer apps, Upcart turns your cart into a revenue-driving touchpoint with in-cart upsells, cross-sells, rewards, and add-ons—without redirecting shoppers or requiring multiple apps. Designed for fashion, food & beverage, beauty, and other DTC brands, Upcart matches your storefront and works seamlessly across desktop and mobile. more Increase AOV with in-cart upsells and cross-sells for frequently bought items Fully customize cart design with custom templates using HTML, CSS, and JSX Incentivize higher spend with rewards, progress bars, and free shipping goals Boost conversions with in-cart discounts and free gifts Reduce friction with a sticky slide cart that stays visible across your store

4.6(Reviews)

Set up a tax addon, dynamic surcharges, and a product surcharge. Easily add processing fees today. Our surcharge app helps you apply conditional fees, late fees, and automatic fees. Quickly add surcharge rules for a small order fee or one time fee. Manage checkout addons, dynamic addons, and free addons to collect an additional charge. Configure a payment surcharge, shipping surcharges, or a bottle deposit. Easily handle an order surcharge, rush fees, deposit fees, service fees, and checkout fees. Bill a membership fee, order & product fees, or a checkout surcharge. Our surcharge app helps you apply conditional fees, late fees, and automatic fees. Quickly add surcharge rules for a small order fee or one time fee. Manage checkout addons, dynamic addons, and free addons to collect an additional charge. Configure a payment surcharge, shipping surcharges, or a bottle deposit. Easily handle an order surcharge, rush fees, deposit fees, service fees, and checkout fees. Bill a membership fee, order & product fees, or a checkout surcharge. more Apply klarna fees, credit card fees, fees payment, or a payment method fee Set a fee rule for a flat fee, cart fee, percentage fee, or extra fee Extra fees manager for mandatory fees, tariff surcharge & extra charge Link price addons, deposits and fees directly to your orders and fees Add a fee, cash on delivery fee, surcharge fee, or fees and surcharges

4.6(Reviews)

Automatically price your customers' multiple uploaded files, images with various conditions. With Upload Center, you can effortlessly offer custom products like personalized phone cases, t-shirts with unique designs, engraved jewelry, custom printed guitar picks, or DTF gang sheet. Our seamless file upload fields make it effortless for customers to bring their ideas to life, while our powerful features streamline your workflow and improves customer satisfaction. With Upload Center, you can effortlessly offer custom products like personalized phone cases, t-shirts with unique designs, engraved jewelry, custom printed guitar picks, or DTF gang sheet. Our seamless file upload fields make it effortless for customers to bring their ideas to life, while our powerful features streamline your workflow and improves customer satisfaction. more Fully customizable multiple upload fields with different conditions. Automatic price calculation based on height or inch square. (PNG & PDF support) Ability to upload multiple files and set the quantity per file. Restore uploaded files even if the product page is closed. Automatically rename the file according to a specified rule.e.g #1002_john_a.png

5.0(Reviews)

Allow file uploads with orders and enable customers to edit images and create personalized products. Upload-Lift allows customers to upload files / images / photos on Product, Contact, Cart and Order Status pages. It's easy to set up and does not require any theme modifications. You can configure the allowed file types, and the app includes an image editor to let customers crop images in your desired format. Let customers upload photo upload on any page on your store. Upload-Lift allows customers to upload files / images / photos on Product, Contact, Cart and Order Status pages. It's easy to set up and does not require any theme modifications. You can configure the allowed file types, and the app includes an image editor to let customers crop images in your desired format. Let customers upload photo upload on any page on your store. more Fast upload of any file type up to 5GB in size. Image editor that allows cropping with predefined ratios and crop shapes. Preview of the uploaded image on the upload field and cart page. File Validations. Configure min/max file size and image dimensions. File conversion of advanced file formats e.g (PDF/Ai) into images.

4.5(Reviews)

Allow your customers to upload files from any source easily. Empower your customers to confidently upload any file or image to your store. Our feature seamlessly integrates with local files, Facebook, Instagram, Twitter, and other platforms. Plus, it comes with a built-in image editor, additional pricing options, conditional logic, and more. Our app is compatible with the homepage, collection pages, and buy button. It seamlessly integrates with your theme and requires no code insertion, making it easy to set up. Empower your customers to confidently upload any file or image to your store. Our feature seamlessly integrates with local files, Facebook, Instagram, Twitter, and other platforms. Plus, it comes with a built-in image editor, additional pricing options, conditional logic, and more. Our app is compatible with the homepage, collection pages, and buy button. It seamlessly integrates with your theme and requires no code insertion, making it easy to set up. more Supported upload from your local files, social media, drive, and many more Upload anywhere from collection, homepage, product and support buy button Built in image editor, Conditional logic, Additional pricing and many more Synchronize and back up your data using google drive Multiple file upload on the same time, unlimited upload field, up to 5 GB files

5.0(Reviews)

Uploadly - File Upload is your kit to add powerful upload fields to your product pages. Uploadly - File Upload is your kit to add powerful upload fields to your product pages. Let customers choose photos, images and files from their computer or mobile device! All files are linked to the respective order and can be downloaded easily. Your customers can pick their file from their phone, their computer, from Facebook, Instagram, Dropbox, Google Drive and many more accounts. Our upload fields are reliable, secure and give your customers also the opportunity to edit and crop their file. Uploadly - File Upload is your kit to add powerful upload fields to your product pages. Let customers choose photos, images and files from their computer or mobile device! All files are linked to the respective order and can be downloaded easily. Your customers can pick their file from their phone, their computer, from Facebook, Instagram, Dropbox, Google Drive and many more accounts. Our upload fields are reliable, secure and give your customers also the opportunity to edit and crop their file. more Simply create powerful file uploads for products which you can customize. Let customers upload from computer, mobile, Instagram and many more accounts. Let customers crop and edit their files and use textbox to receive notes. Multi-language support. Display the upload button in different languages. Download the files from your customers directly inside the respective order.

4.5(Reviews)

Present your negotiated UPS parcel rates as options in the checkout process. Connect your Unishippers account and retrieve your negotiated rates to offer real-time shipping quotes during checkout. Use the packaging algorithm to quote packages that will be charged for dimensional weight. Ground with Freight Pricing, SurePost, and Simple Rate supported. Automatically detect address types, include insurance, use transit time to limit Ground service on perishable products, and accurately estimate delivery dates by specifying order cut-off times and lead-time offsets. Connect your Unishippers account and retrieve your negotiated rates to offer real-time shipping quotes during checkout. Use the packaging algorithm to quote packages that will be charged for dimensional weight. Ground with Freight Pricing, SurePost, and Simple Rate supported. Automatically detect address types, include insurance, use transit time to limit Ground service on perishable products, and accurately estimate delivery dates by specifying order cut-off times and lead-time offsets. more Identifies billable weight as the greater of actual or dimensional weight. Capable of providing quotes for GFP, SmartPost, and Simple Rate services. Automatically detect address type and capture the residential delivery fee. Limit Ground service by transit time to protect perishable products. Specify order cut-off times and lead-times for accurate delivery estimates.

4.5(Reviews)

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About Custom rules Apps for Shopify

Custom rules 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 rules 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 rules solutions available in the Shopify App Store. Each has been selected based on its functionality, user ratings, and overall value for Shopify merchants.