The 10 Best Checkout Validation Apps for Shopify

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

Updated October 10, 2026 · Organic ranking

Maintained by Rankbase, built by a Shopify app developer

1

BoomGate: Checkout Validation

★ 4.9 (43 reviews) · Free plan available

Build no-code rules to control checkout, shipping & payments
Built for Shopify
2

King Checkout Validation

★ 5.0 (21 reviews) · Free plan available

Block checkout with address validation and order limits
Built for Shopify
3

Cart Block: checkout validator

★ 4.6 (24 reviews) · Free plan available

Block or validate orders in product, cart and checkout page
Built for Shopify
4

Payflow: COD & Checkout Rules

★ 5.0 (115 reviews) · Free plan available

COD fees, payment and delivery rules with checkout validations
Built for Shopify
5

SMART Checkout Rules & Upsells

★ 5.0 (793 reviews) · Free

Checkout upsell app, rules & post purchase upsells to grow AOV
Built for Shopify
6

Ninja Address Validation

★ 4.9 (46 reviews) · Free trial available

Address Validator App for Checkout Validation. Stop Bad Orders
Built for Shopify
7

Blockit: Checkout Rule

★ 5.0 (8 reviews) · Free plan available

Checkout validation with address validator to stop fake orders
Built for Shopify
8

Checkout Rules & Discounts

★ 5.0 (87 reviews) · Free plan available

Customize checkout rules to drive sales and reduce risk
Built for Shopify
9

Bony: Checkout Rules & COD

★ 4.9 (26 reviews) · Free plan available

Payment, shipping, purchase limits & checkout validation
Built for Shopify
10

Blockify Checkout Customizer

★ 4.9 (310 reviews) · Free plan available

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

Compare the top 3 head-to-head

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Frequently asked questions

Which is the best Checkout Validation app for Shopify?

Based on the Shopify App Store's own organic ranking for "checkout validation", BoomGate: Checkout Validation currently holds the #1 spot, with a 4.9 star rating across 43 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 validation", refreshed daily. Shopify's own sponsored ("Ad") results are excluded, so positions reflect its real search ranking rather than paid promotion. Source: the Shopify App Store search results for "checkout validation", you can verify the current ranking there yourself.

Which Checkout Validation apps are Built for Shopify?

10 of the top 10 checkout validation apps hold the Built for Shopify badge: BoomGate: Checkout Validation, King Checkout Validation, Cart Block: checkout validator, Payflow: COD & Checkout Rules, SMART Checkout Rules & Upsells 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 October 10, 2026, the top-ranked checkout validation app on the Shopify App Store is BoomGate: Checkout Validation, with a 4.9 star rating across 43 reviews. 10 of the top 10 carry the Built for Shopify badge, and the average rating is 4.9 stars across 1,473 reviews.

Related keyword rankings

All Checkout rankings → · Browse all keywords →

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Rankbase helps Shopify app developers track keyword positions, analyze install click data, and optimize app listings to rank higher in the Shopify App Store.

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Built by Craftshift

Rankbase is made by Craftshift, a Shopify Partner building apps for product images, variants, and bulk catalog work. We built Rankbase to track the App Store rankings of our own apps first, then opened it to other developers, and this directory grew out of that work. The rankings on these pages are Shopify's own organic search results; we never edit them, including for our own apps.

Craftshift apps on the Shopify App Store