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Shopify Checkout Apps 2026

Best Shopify Checkout Apps for Shopify Plus in 2026

Shopify checkout apps help Shopify Plus merchants customize checkout using Checkout UI Extensions. They can be used to add upsells, trust messaging, custom fields, delivery content, analytics, and post-purchase offers without editing theme code. This guide breaks down the main types of Shopify checkout apps, what each category is best for, and which tools are worth considering in 2026.

7 categories18+ apps reviewedLast updated

Can Shopify checkout be customized?

Yes, but meaningful checkout customization 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.

What are Shopify checkout apps?

Shopify checkout apps are apps that 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.

Best for:
Shopify Plus merchants
Built with:
Checkout UI Extensions
Common use cases:
Upsells, trust content, custom fields, delivery messaging, analytics
Implementation:
No theme code required

Use this guide by starting with the category that matches your goal. If you want to increase AOV, start with checkout upsell apps. If you want to reduce friction or improve confidence, start with content and trust apps. If you want to collect extra order information, start with custom field apps.

1. Checkout Upsell & Cross-Sell Apps

Checkout upsell apps work inside the Shopify Plus checkout flow before payment is completed, making them one of the most commercially important points for personalized product recommendations. When offers are relevant and well placed, checkout upsells can increase average order value without requiring shoppers to leave the checkout flow.

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Checkout Components icon

Checkout Components

Shopify Plus
★5.0(43 reviews)From $49.99/mo · 14-day free trial

Checkout Components is a no-code platform for Shopify Plus checkout personalization. It lets merchants add upsells, cross-sells, and AI-powered product recommendations directly in the checkout flow — without developer involvement. Conditional rendering by customer segment, cart value, Shopify Markets, and product tags means each shopper sees relevant offers.

  • No-code upsell & cross-sell components
  • AI recommendations from Nosto, Algolia & Searchspring
  • Conditional rendering by segment, cart & markets
  • Built-in A/B testing & revenue analytics
  • Custom form fields (gift messages, delivery notes)
  • Content blocks, trust badges & BNPL messaging

Pros

  • ✓Flat-rate pricing - no revenue caps or volume tiers
  • ✓Widest range of checkout component types
  • ✓Most extensive AI recommendation integrations

Cons

  • ✗Shopify Plus required (checkout extensibility)
View on Shopify App Store
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Rebuy icon

Rebuy

★4.9(763 reviews)From $99/mo (volume-based)

AI-powered personalization engine that covers the full funnel - from product pages and smart cart through to checkout and post-purchase. Strong choice for merchants who want recommendations across every touchpoint, not just checkout.

  • Checkout upsells & cross-sells
  • Smart cart with product recommendations
  • Full-funnel AI personalization
  • 35+ third-party integrations

Pros

  • ✓Full-funnel coverage beyond just checkout
  • ✓Strong pre-built recommendation widgets

Cons

  • ✗Volume-based pricing can get expensive at scale
  • ✗Checkout is one of many features, not a specialization
View on Shopify App Store
3
UpsellPlus icon

UpsellPlus

★4.9(84 reviews)From $49/mo (revenue-capped)

Focused checkout upsell and cross-sell app for Shopify Plus. Supports product add-ons, complementary item recommendations, and customizable display styles within the checkout flow.

  • Checkout upsell & cross-sell offers
  • Product add-ons & complementary items
  • Customizable display layouts
  • Revenue-capped pricing tiers

Pros

  • ✓Focused checkout upsell toolset
  • ✓Relatively easy to set up

Cons

  • ✗Revenue-capped pricing limits scalability
  • ✗Fewer component types than Checkout Components
View on Shopify App Store

2. Checkout Content & Trust Apps

Content and trust apps add non-product blocks to the checkout - banners, trust badges, shipping messaging, rich text, BNPL messaging, and more. These components reduce checkout anxiety and build confidence at the moment of purchase. Research consistently shows that trust signals at checkout reduce cart abandonment.

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Checkout Components icon

Checkout Components

Shopify Plus
★5.0(43 reviews)From $49.99/mo · 14-day free trial

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.

  • Alert banners & announcements
  • Trust badges & security seals
  • BNPL messaging (Afterpay, Klarna, etc.)
  • Free shipping threshold progress bars
  • Custom rich text & HTML blocks
  • Review widgets from Judge.me, Okendo & Loox
View on Shopify App Store
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Checkout Blocks icon

Checkout Blocks

★5.0(230 reviews)From $200/mo

A focused checkout content app that allows merchants to add custom text, images, and basic blocks to the Shopify Plus checkout. Good for merchants who want lightweight checkout content customization without the full CRO platform.

  • Custom text & image content blocks
  • Checkout branding options
  • Basic conditional logic
  • Custom input fields

Pros

  • ✓Simple, focused toolset
  • ✓Strong review count

Cons

  • ✗Higher cost for limited feature set
  • ✗Less powerful than Checkout Components
View on Shopify App Store

3. Post-Purchase Upsell Apps

Post-purchase upsell apps present offers after checkout is complete - on the order confirmation or thank-you page. Because payment is already captured, these offers use one-click acceptance with no re-entry of payment details. They are particularly effective for consumable products, accessories, and subscription conversions.

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AfterSell icon

AfterSell

Shopify Plus
★4.9(832 reviews)From $34.99/mo (volume-based)

One of the leading post-purchase upsell platforms on Shopify. AfterSell specializes in thank-you page offers, countdown timers, and one-click upsell/downsell funnels. Their platform is purpose-built for post-purchase revenue capture and is widely used across the Shopify Plus ecosystem.

  • One-click post-purchase upsells
  • Upsell & downsell funnel flows
  • Countdown timers & urgency elements
  • A/B testing for offers
  • Thank-you page customization
  • Smart offer targeting

Pros

  • ✓Market leader in post-purchase upsells
  • ✓Strong A/B testing capabilities
  • ✓Large community & ecosystem

Cons

  • ✗Volume-based pricing increases with store growth
  • ✗Separate charge for checkout extension on Plus
View on Shopify App Store
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ReConvert icon

ReConvert

★4.9(4,500+ reviews)Free plan available · Paid from $4.99/mo (volume-based)

Post-purchase and thank-you page builder with upsells, surveys, cross-sells, product recommendations, and order tracking widgets. Offers more flexibility in building out the full post-purchase page experience.

  • Thank-you page builder (drag & drop)
  • Post-purchase upsells & cross-sells
  • Customer surveys
  • Birthday collection & discount offers
  • Order tracking widget

Pros

  • ✓Extensive thank-you page customization
  • ✓Very large review base
  • ✓Affordable entry price

Cons

  • ✗More complex to set up for simple use cases
View on Shopify App Store
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Checkout Components icon

Checkout Components

★5.0(43 reviews)From $49.99/mo · 14-day free trial

Checkout Components also supports post-purchase upsell components alongside its checkout capabilities, enabling merchants to run a consistent upsell strategy from checkout through to post-purchase with unified analytics.

  • Post-purchase upsell components
  • Consistent analytics across checkout & post-purchase
  • Conditional offer targeting
  • No separate platform required
View on Shopify App Store

4. Checkout Custom Field Apps

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.

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Checkout Components icon

Checkout Components

Shopify Plus
★5.0(43 reviews)From $49.99/mo · 14-day free trial

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.

  • Free-text, date, dropdown & checkbox fields
  • Conditional display logic
  • Stored as Shopify order metafields
  • Gift message, delivery note & date picker support
  • Identity verification (via GBG GreenID integration)
View on Shopify App Store
2
Checkout Blocks icon

Checkout Blocks

★5.0(230 reviews)From $200/mo

Also supports custom field collection at checkout with basic validation options. A reasonable alternative for merchants who primarily need simple text inputs without the full Checkout Components feature set.

  • Custom text input fields
  • Basic field validation
  • Order metafield storage
  • Conditional field display
View on Shopify App Store

5. Address Validation & Delivery Apps

Address validation apps reduce failed deliveries by correcting address errors at the point of entry. They also help merchants communicate estimated delivery dates and shipping options during checkout - reducing uncertainty and the "where is my order" support ticket volume.

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Addressfinder icon

Addressfinder

★4.8(130+ reviews)From $9/mo

Address autocomplete and validation app optimized for Australian and New Zealand addresses. Helps reduce failed deliveries in those regions and speeds up the checkout flow by auto-completing addresses from a verified database.

  • AU/NZ address autocomplete
  • Real-time address verification
  • Reduces failed delivery rates
  • Fast checkout experience
View on Shopify App Store
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Checkout Components (Delivery Messaging) icon

Checkout Components (Delivery Messaging)

★5.0(43 reviews)Included in Checkout Components plans

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.

  • Delivery date messaging components
  • Shipping method-specific content
  • Location-based messaging
  • No separate app required
View on Shopify App Store

6. Checkout Analytics Apps

Checkout analytics apps give Shopify Plus merchants visibility into how customers behave inside the checkout - where they drop off, which upsell offers convert, and how checkout changes impact revenue. Without dedicated analytics, checkout optimizations are guesswork. These tools provide the data needed to make informed decisions about checkout design, upsell strategy, and conversion rate optimization.

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Checkout Components icon

Checkout Components

Shopify Plus
★5.0(43 reviews)From $49.99/mo · 14-day free trial

Checkout Components includes built-in analytics that track revenue generated by each checkout component, upsell conversion rates, and A/B test performance - all from a single dashboard. Because analytics are native to the platform, there is no need to configure third-party tracking or stitch data together across tools.

  • Per-component revenue attribution
  • Upsell & cross-sell conversion tracking
  • Built-in A/B testing with statistical significance
  • Real-time analytics dashboard
  • Component-level performance breakdown
  • ROI reporting across all checkout components

Pros

  • ✓Analytics built in - no extra app or setup required
  • ✓Native A/B testing with revenue attribution
  • ✓Tracks performance across all component types

Cons

  • ✗Analytics scoped to Checkout Components usage
View on Shopify App Store
2
Littledata icon

Littledata

★4.4(170+ reviews)From $99/mo

Server-side analytics connector that sends accurate Shopify checkout and order data to Google Analytics 4, Meta Ads, and other platforms. Solves the problem of ad blockers and client-side tracking gaps that cause under-reporting in standard GA4 setups.

  • Server-side GA4 tracking
  • Checkout step & funnel tracking
  • Facebook Conversions API integration
  • Accurate revenue & conversion attribution
  • Headless & hydrogen support

Pros

  • ✓Best-in-class server-side tracking accuracy
  • ✓Supports GA4, Meta, TikTok, and more

Cons

  • ✗Higher price point for smaller stores
  • ✗Focused on analytics piping, not checkout CRO
View on Shopify App Store
3
Lucky Orange icon

Lucky Orange

★4.7(800+ reviews)Free plan available · Paid from $32/mo

Session recording and heatmap tool that helps merchants see exactly how customers interact with their store - including checkout pages. Useful for identifying UX issues, form abandonment, and friction points that quantitative analytics alone might miss.

  • Session recordings (including checkout)
  • Heatmaps & click tracking
  • Form analytics & abandonment tracking
  • Real-time visitor dashboard
  • Conversion funnels

Pros

  • ✓Visual session replays for qualitative insights
  • ✓Free plan available for smaller stores

Cons

  • ✗Limited checkout-specific analytics depth
  • ✗Session recording volume capped on lower plans
View on Shopify App Store

7. Checkout Personalisation Apps

Checkout personalisation apps tailor the checkout experience to each individual customer - showing different content, offers, and layouts based on customer segments, purchase history, cart contents, geographic location, and more. Personalised checkouts consistently outperform static ones because they show relevant information to every shopper rather than a one-size-fits-all experience. There currently is only one app that offers this level of personalisation, and that is Checkout Components.

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Checkout Components icon

Checkout Components

Shopify Plus
★5.0(43 reviews)From $49.99/mo · 14-day free trial

The most comprehensive checkout personalisation toolset on Shopify Plus. Checkout Components lets merchants conditionally render any checkout element - upsells, content, fields, banners - based on customer segment, cart value, product tags, Shopify Markets, shipping method, and more. Combined with AI recommendations from Nosto, Algolia, and Searchspring, every customer sees a checkout tailored to them.

  • Conditional rendering by customer segment & tags
  • Cart value & product-based personalisation
  • Shopify Markets & geographic targeting
  • AI-powered product recommendations (Nosto, Algolia, Searchspring)
  • Shipping method-based content display
  • A/B testing personalised vs. default experiences

Pros

  • ✓Deepest conditional logic of any checkout app
  • ✓Works across all component types, not just upsells
  • ✓Integrates with leading AI recommendation engines

Cons

  • ✗Shopify Plus required (checkout extensibility)
View on Shopify App Store

Frequently Asked Questions

What are the best Shopify checkout apps in 2026?
The best Shopify checkout apps in 2026 are Checkout Components (for checkout upsells, content blocks, custom fields, analytics, and personalisation), Rebuy (for full-funnel AI personalization), AfterSell (for post-purchase upsells), Littledata (for server-side analytics), and Checkout Blocks (for basic checkout content). The right choice depends on whether you need a specialist checkout tool or full-funnel coverage.
Do Shopify checkout apps require Shopify Plus?
Yes. Apps that use Checkout UI Extensions - which allow customization inside the checkout flow itself - require Shopify Plus. This includes Checkout Components, Rebuy (checkout features), AfterSell (checkout extension), and Checkout Blocks. Post-purchase apps that customize only the thank-you page may work on lower-tier plans.
What's the difference between checkout and post-purchase upsells?
Checkout upsells appear during the checkout flow before payment is submitted, allowing customers to add items to their existing order. Post-purchase upsells appear after payment on the order confirmation page, offering one-click additions to the completed order. Both increase average order value but target different moments. Checkout upsells typically convert at higher rates because the customer is already in buying mode.
Can I customize Shopify checkout without code?
Yes. Apps like Checkout Components offer a fully no-code drag-and-drop experience for adding upsells, content blocks, custom fields, and trust elements to your Shopify Plus checkout. No developer is required to get started, though developers can also use the API for advanced customizations.
How do checkout upsell apps integrate with AI recommendation platforms?
Checkout Components integrates directly with AI recommendation platforms including Nosto, Algolia Recommend, Searchspring, Boost Commerce, and Shopify AI. This allows merchants to use their existing personalization infrastructure to power checkout recommendations, rather than relying on a separate recommendation engine built into the upsell app itself.