King Checkout Validation
Block Unwanted Checkout based on address, cart and customer.
Rating
5.0
feedback
12
chart
#3,518
Reviews Over Time
App Ranking
Time spent using app
-
Less than an hour
0%
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Less than a day
25%
-
Less than a month
25%
-
Less than a year
33%
-
More than a year
0%
Reviews Summary
The reviews for this Shopify app are overwhelmingly positive, with users praising the app's functionality and the exceptional support provided by the developer team. Customers appreciate the app's ability to customize checkout processes, set character limits, and block specific ZIP codes seamlessly. The support team is highlighted for their quick responses, helpfulness, and willingness to go above and beyond to address any issues or limitations. Users also commend the developer for creating new functionalities promptly and providing efficient solutions to their queries.
Highlights
Review RSS Feed
All reviews
Sept. 12, 2025
This app really saved us. We have an integration with SAP, and some fields have character limits that can’t be changed. This app solved that issue, and we also used it to block sending orders to certain islands via ZIP code rules — which works perfectly. I highly recommend this app. We’re running it on eight stores now.
July 25, 2025
This is a fantastic product and the developer is extremely responsive and helpful! Great app!
June 19, 2025
Great app for controlling the checkout process with custom rules! We mainly use it to block specific ZIP codes and set character limits in fields before the data gets pushed to Shopify — and it works exactly as needed. What really stands out is the support team. When we first ran into an issue with ZIP code blocking, they quickly developed a new feature that supports both prefix and suffix rules. Later, when we needed to block something else, they genuinely tried to help — even though it turned out to be a limitation on Shopify’s side, not theirs. Highly recommended if you need more control over your checkout fields and top-notch support behind it.
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