Cart Block: checkout validator

Cart Block: checkout validator

Pricing
Free plan available. Free trial available.
Highlights
Use directly in Shopify admin
Rating
4.8 (14)
Developer
Nextools

CartBlock validates or blocks any order, protects from bots and frauds using multiple conditions

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.

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. more
  • Block or validate purchases/orders by multiple rules.
  • Display warnings and messages on product pages, cart pages, and during checkout.
  • Bots Block: protect your store from fraudulent transactions trough transparency.
  • Smart Dynamic Captcha in the checkout with single or multiple conditions
  • Multichannel support: in-app chat, website resources and social media engagement
Highlights
Use directly in Shopify admin

Languages

English

Works with

Pricing

FREE DEV

Free

  • Free for dev stores
  • Free for Shopify Plus sandbox stores

Premium Plan

$3.99 / month

or $38.28/year and save 20%

  • - All Free Plan included
  • - Unlimited Checkout Validation Rules
  • - Validate Shipping Address
  • - Validate Cart Items
  • - Block Checkout
  • - Block Cart
  • - Prevent Fraud
  • - Premium Support

7-day free trial

Advanced Plan

$5.99 / month

or $57.50/year and save 20%

  • - All Premium Plan included
  • - Unlimited Checkout Validation Rules
  • - Mix Different Conditions
  • - Validate Cart Items
  • - Block Cart And Checkout
  • - Target Specific Markets
  • - Premium Support

7-day free trial

Ultimate Plan

$7.99 / month

or $76.70/year and save 20%

  • - All Advanced Plan included
  • - Shopify Plus Only
  • - Block Discount Codes
  • - Block with Specific Payment Method
  • - Block with Specific Delivery Method
  • - Premium Support

7-day free trial

All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.

Reviews (14)

Overall rating
4.8
Counts per rating level
  • 86% of ratings are 5 stars
  • 7% of ratings are 4 stars
  • 0% of ratings are 3 stars
  • 0% of ratings are 2 stars
  • 7% of ratings are 1 stars
July 11, 2025

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 and works flawlessly so far!

Springfield Leather Co
United States
About 2 months using the app
Nextools replied July 12, 2025

Thank you for your positive review 😊

Edited July 29, 2025

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 this kind of support.

3BR Powersports
United States
9 days using the app
Nextools replied July 19, 2025

Thank you very much for your positive review, we really appreciate your support 😊

June 23, 2025

Great quick and friendly staff!

Patta Wholesale
Netherlands
5 months using the app
Nextools replied June 24, 2025

Thank you for your positive review 😊

June 5, 2025

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
United Kingdom
About 2 hours using the app
Nextools replied June 6, 2025

Thank you for your positive review 😊

December 7, 2024

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
Canada
About 2 months using the app
Nextools replied December 8, 2024

Thank you for your positive review 😊

Support

App support provided by Nextools.

Developer

Nextools

Via Val di Lanzo, Rome, RM, 00141, IT

Launched

February 2, 2024

Data access

This app needs access to the following data to work on your store. Learn why in the developer's privacy policy .

View personal data:

Store owner

  • Store owner

    Name, email address, phone number, physical address

View and edit store data:

Shopify Functions, Online Store

  • Edit Shopify Functions

    Cart and checkout validations

  • Edit your Online Store

    Metaobjects or metaobject definitions

  • View other data

    Shopify Markets settings

More apps like this

4.9 out of 5 stars 158 total reviews Free trial available
Set product and collection limits on your cart
4.9 out of 5 stars 136 total reviews Free plan available
Secure & customize checkout rule and checkout customization
Built for Shopify
5.0 out of 5 stars 161 total reviews Free plan available
Set Purchase Limit for Minimum Order Quantity & Checkout rules
Built for Shopify

Want to add an app?

Try Shopify free for 3 days