Start with the change you want to make. Product recommendations, delivery reassurance, custom fields, and post-purchase offers solve different problems. This guide helps you choose the right checkout tools, check Shopify Plus requirements, and decide how you will measure the result.
Yes, but meaningful checkout customisation is generally limited to Shopify Plus. Shopify Plus merchants can use Checkout UI Extensions and Shopify Functions to safely add content, upsells, custom fields, and other checkout experiences without custom theme edits.
Shopify checkout apps extend the Shopify Plus checkout experience using Checkout UI Extensions. They let merchants add native checkout components such as upsells, trust content, custom input fields, delivery messaging, and analytics without modifying theme code.
Most Shopify checkout apps fall into a few core categories: checkout upsells, trust and content blocks, post-purchase offers, custom fields, delivery tools, and analytics.
Published by Checkout Components. This is a product-fit guide, not an independent ranking. The featured starting points were checked against the linked vendor sources on 20 October 2026. Confirm current features, availability, and pricing before choosing a plan.
Choose an in-checkout upsell tool for a useful accessory, refill, or complementary product. Check layouts, recommendation sources, discount behaviour, and display conditions. In-checkout UI offers require Shopify Plus.
Use content blocks for delivery expectations, returns, and product reassurance. Use custom fields for information such as a gift message. Keep the content specific to the order.
Evaluate post-purchase separately from in-checkout upsells. Payment compatibility, offer eligibility, follow-up paths, and reporting are different.
Targeting decides where an experience appears. A/B testing compares alternatives. Ask the provider to demonstrate your exact cart, customer, and market conditions, plus the reporting you will use.
Evaluate it if your Shopify Plus team wants checkout upsells, content, and custom fields together, with display rules, a visual branding editor, and post-purchase offers. Pro currently adds A/B testing, Shopify-segment analytics, and integrations.
Its current range includes cart, checkout, and post-purchase products. The pricing page lists Shopify Plus checkout upsells within Post-Purchase and Complete. Confirm the order-volume tier and promotion terms for your store.
A starting point for content blocks, custom fields, discounts, and payment or delivery controls. Match the current feature set to your job rather than treating it as a like-for-like upsell suite.
Shopify documentationOur BFCM research looks at offer price, cart context, and customer differences across stores using Checkout Components. Use it to choose a hypothesis for your own checkout, not as a promised result.
Read the checkout-upsell researchCheckout upsell apps work inside the Shopify Plus checkout flow before payment is completed. They can offer a relevant accessory, refill, or complementary product without requiring shoppers to leave checkout. Compare layouts, recommendation sources, discounts, display conditions, and measurement.
Checkout Components is a no-code platform for Shopify Plus checkout personalisation. Merchants can add upsells, cross-sells, and product recommendations in checkout, then use customer, cart, market, and product conditions to control when they appear.
Rebuy provides product recommendations and merchandising across product pages, its Smart Cart, checkout, and post-purchase surfaces. Evaluate which surfaces and controls are included in the plan you are considering.
Focused checkout upsell and cross-sell app for Shopify Plus. Supports product add-ons, complementary item recommendations, and customisable display styles within the checkout flow.
Content and trust apps add non-product blocks such as banners, trust badges, shipping messages, rich text, and BNPL information. Use them to answer a question that could stop the order, and keep the content specific to the customer's cart and delivery context.
Beyond upsells, Checkout Components provides a comprehensive suite of checkout content blocks. Add banners, trust badges, BNPL messaging, free shipping progress bars, custom rich text, and more, all conditionally rendered by customer segment or cart contents.
Shopify's Checkout Blocks app lets Shopify Plus merchants add checkout content, custom fields, discounts, and delivery or payment method controls.
Post-purchase upsell apps present offers after checkout is complete, on the order confirmation or thank-you page. These offers can use one-click acceptance without requiring payment details to be entered again. Compare offer controls, eligible products, testing, and order-volume terms.
AfterSell covers post-purchase and thank-you page offers, one-click upsell and downsell funnels, plus cart and checkout products. Its current pricing page includes Shopify Plus checkout upsells in Post-Purchase and Complete plans.
ReConvert provides post-purchase and thank-you page tools for upsells, surveys, product recommendations, and order-tracking widgets.
Checkout Components also supports post-purchase upsell components alongside its checkout capabilities, so merchants can run a consistent upsell strategy from checkout through to post-purchase with unified analytics.
Custom field apps let Shopify Plus merchants collect additional information during checkout, gift messages, delivery instructions, date pickers, identity verification, and more. Data is typically stored as order metafields and accessible in your Shopify admin, fulfilment systems, and warehouse integrations.
Supports a wide range of custom input fields at checkout including free-text fields, date pickers, dropdowns, and checkbox inputs. All fields can be conditionally shown based on cart contents, customer tags, or shipping method, and data is stored directly as Shopify order metafields.
Shopify Checkout Blocks supports custom field collection in checkout, including text inputs, validation, order metafield storage, and conditional display.
Address validation apps check or autocomplete address information during entry. Delivery-messaging tools serve a different job: communicating estimated dates or shipping details during checkout. Compare geographic coverage, data sources, placement, and pricing for the workflow you need.
Addressfinder provides address autocomplete and validation for Australian and New Zealand addresses using its address data service.
Checkout Components includes shipping and delivery messaging components that can be conditionally shown based on shipping method, customer location, or cart contents, helping communicate expected delivery timelines without the need for a separate app.
Checkout analytics tools answer different questions. Component reporting measures interactions with a checkout experience, server-side connectors send commerce events to analytics destinations, and session tools provide qualitative playback. Match the tool to the question and verify its event definitions before comparing results.
Checkout Components includes component reporting, upsell and completed-order metrics, A/B testing on eligible plans, and analytics that can be filtered by Shopify segment.
Littledata is a server-side analytics connector that sends Shopify checkout and order events to destinations including Google Analytics 4 and Meta.
Lucky Orange provides session recordings, heatmaps, form analytics, funnels, and a visitor dashboard for qualitative behaviour analysis.
Checkout personalisation apps tailor checkout content and offers using signals such as customer segments, cart contents, geographic location, and shipping method. Compare the targeting controls, component coverage, testing workflow, and reporting available in each app before choosing a fit.
Checkout Components lets Shopify Plus merchants conditionally render upsells, content, fields, and banners using customer segments, cart value, product tags, Shopify Markets, shipping method, and other rules. Recommendation sources include manual selection and connected services such as Nosto, Algolia, and Athos.
Choose the offer or message you want to improve, then check the setup and measurement in your own store.