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Cart Block: checkout validator icon

Cart Block: checkout validator

Block or validate orders in product, cart and checkout page

by Nextools · Launched: February 2024 · Free plan available.

4.6 (24) on Shopify Built for Shopify
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CartBlock blocks purchases and orders based on criteria like country, product quantity, customer profiles, discount code and more also with Captcha

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About Cart Block: checkout validator

CartBlock's customizable conditions allow you to set specific rules, blocking purchases an orders based on criteria like product quantity, country, customer profiles, discount code and much more making it the perfect solution for blocking customers or bots. It maintains transparency through warnings and messages at critical points, ensuring customers are well-informed. A smart dynamic Captcha with single or multiple conditions can be added to the checkout.

Last verified: October 13, 2026 · Fresh

App details

Developer
Nextools
Pricing
Free plan available
Launched
February 2024
Rating
4.6 (24) on Shopify

Key features

  • Free for dev stores
  • Free for Shopify Plus sandbox stores
  • - All Free Plan included
  • - Unlimited Checkout Validation Rules
  • - Validate Shipping Address
Integrations with:

Checkout Shopify Admin

4 plans · starts free · 7-day free trial

FREE DEV

Free

Premium Plan

$3.99/month

Advanced Plan

$5.99/month

Ultimate Plan

$7.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 28 Shopify App Store reviews

Use the arrows to read individual reviews

Fabio helped me setting the app in less than a day, I totally recommend it. Thanks!
— AntlerRings.com
Abhi var hjälpsam och förstod direkt vad jag gjort fel och fixade det direkt.
— ARK Sports
Great app that does exactly what we needed. We wanted to display a product to all customers globally but restrict purchasing to certain regions only, and this app handled it perfectly. The team was also really responsive and helpful when we had questions. Would highly recommend.
— Loui
Abhi was quick to help and fixed right away.
— Clio Snacks
Andrea was incredibly helpful in getting the exact configuration we needed set up!
— Insect Shield
I had issues with Fraud and the team at Cart Block was able to create a custom work around in less then 24 hours! Highly recommend.
— SteelFit USA
Great Experience
— Olivia Shukria | Online Store
Great app, thanks Abhi for helping me!
— dariadéh
I had a great experience with Abhi who helped me set up a cart block validation!
— Tom & Teddy UK
The app is incredibly easy to use, even with the complex constraints of my shop setup. What impressed me most was their responsiveness: the support team was quick to understand my needs and helped me get everything running smoothly in no time. Highly recommended!
— Vaonis
Great customer support. Actually AMAZING customer support. I was unable to get a validation tuned to effectively block a BOT attack. Customer support tech Andrea set up an online call where we worked through the process to arrive at solution. He spent the time to get it right and then stay on the line to test the validation to ensure that it worked correctly. Five stars isn't high enough for thi...
— 3BR Powersports
There are a few things that can be tricky to set up...BUT FEAR NOT!! This support staff goes above and beyond to make sure you have the settings just right. Sometimes it takes a couple Validations to get things set up. The only way you are getting frustrated is if you don't use the in app chat to get connected to those who can help you most. Can't figure it out...they will help! Great features...
— Springfield Leather Co
empty
— Zero Excuses Meal Prep
Free plan says "Free for dev stores" but I cannot add any validation rule without subscribing to a premium plan. Cannot properly test the app thus cannot install it on my client's store with confidence.
— Dev Basic Plan
Still lets orders come through
— SeaPaints
Great quick and friendly staff!
— Patta Wholesale
I just started using the app and I don't know whether it's going to work or not but the support I received from the developer was the best experience I had with any app on shopify. 5 stars for the support and hopefully 5 stars for the app
— Seven Potions
I have a few products marked as $0 in my store because I am not permitted to put the pricing online, and even though I customized the "Add to Cart" button to say "Contact for Pricing", people would still click and check out these items at $0 (products have a $4,000-$14,000 value range). This app allowed me to set a rule that products below $1 cannot be checked out and it completely stopped the $0...
— LuxeWell Life
Fabio has been so helpful in getting us set up to use cartblock. Our situation was a bit complicated, and he sorted it all out for us! This app does exactly what it says..it provides a clean way to block customers from checking out based on rules you set up.
— PlantsInTheCity
I stumbled across this APP. For me it is fantastic and after 1 week of using it it has generated some good income which I was not having before. For me a wanted to block certain products from being sold to specific countries, rather than blocking the entire country. Shopify as standard blocks the whole country by removing the specific country from checking out..... however Cart Block does it diff...
— MicroAvionics

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