The 10 Best Checkout Extensibility Apps for Shopify

The top 10 apps merchants see when they search the Shopify App Store for checkout extensibility, in the exact order the store ranks them. Only Shopify's organic ranking is shown, never sponsored ads.

Updated August 26, 2026 · Organic results only

Maintained by Rankbase, built by a Shopify app developer

1

Blockify Checkout Customizer

★ 4.9 (279 reviews) · Free plan available

Checkout rules, checkout customizer and discounts to boost AOV
Built for Shopify
2

Pure Checkout Extensibility

· Free plan available

Hide, rename, and reorder checkout payment & delivery methods
3

Zigpoll Customer Surveys

★ 5.0 (505 reviews) · Free plan available

Post-purchase & on-site surveys for attribution, NPS, & more
4

Checkout Bear

★ 5.0 (3 reviews) · Free to install

Customize your checkout page with checkout extensibility
5

Checkout Extensions

· Free plan available

Personalize, A/B test, and optimize checkout with upsells
6

CWILL Loyalty & Referrals

★ 4.9 (780 reviews) · Free plan available

Loyalty Rewards Program: Loyalty Points, Referrals & VIP Tiers
Built for Shopify
7

ShipGuard: Shipping Protection

★ 4.3 (13 reviews) · Free to install

Custom shipping protection/shipping insurance managed by you.
Built for Shopify
8

WB: Frequently Bought Together

★ 4.9 (128 reviews) · Free plan available

Increase your AOV and sales with AI-recommended product bundle
Built for Shopify
9

Flare: Delivery Date Picker

★ 4.9 (111 reviews) · Free trial available

Delivery calendar, date picker & store pickup for checkout.
Built for Shopify
10

Kedra Checkout Rules & Upsells

★ 4.8 (503 reviews) · Free plan available

Checkout customizer, validate checkout, grow AOV with upsells
Built for Shopify

Frequently asked questions

Which is the best Checkout Extensibility app for Shopify?

Based on the Shopify App Store's own organic ranking for "checkout extensibility", Blockify Checkout Customizer currently holds the #1 spot, with a 4.9 star rating across 279 reviews. The best choice for your store still depends on your requirements, so compare the top results above.

How is this ranking determined?

We record the organic results merchants actually see when searching the Shopify App Store for "checkout extensibility", refreshed daily. Sponsored ("Ad") placements are excluded, so positions reflect Shopify's real search ranking rather than paid promotion. Source: the Shopify App Store search results for "checkout extensibility", you can verify the current ranking there yourself.

Which Checkout Extensibility apps are Built for Shopify?

6 of the top 10 checkout extensibility apps hold the Built for Shopify badge: Blockify Checkout Customizer, CWILL Loyalty & Referrals, ShipGuard: Shipping Protection, WB: Frequently Bought Together, Flare: Delivery Date Picker and more.

What does the Built for Shopify badge mean?

Built for Shopify
Built for Shopify is the highest level of recognition Shopify awards an app. To earn the badge, an app must meet Shopify's standards for safety, performance, ease of use, and proven usefulness: it cannot slow down the admin, storefront, or checkout, must integrate seamlessly into the Shopify admin, and must demonstrate quality through installs, reviews, and ratings over time. When comparing similar apps, preferring ones with the badge is a safe default. Learn more about the Built for Shopify badge →

As of August 26, 2026, the top-ranked checkout extensibility app on the Shopify App Store is Blockify Checkout Customizer, with a 4.9 star rating across 279 reviews. 6 of the top 10 carry the Built for Shopify badge, and the average rating is 4.8 stars across 2,322 reviews.

Related keyword rankings

All Checkout rankings → · Browse all keywords →

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