King Checkout Validation
Block Unwanted Checkout based on address, cart and customer.
Rating
5.0
feedback
12
chart
#3,312
Reviews Over Time
App Ranking
Time spent using app
-
Less than an hour
0%
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Less than a day
25%
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Less than a month
25%
-
Less than a year
33%
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More than a year
0%
Reviews Summary
The reviews for this Shopify App are overwhelmingly positive, with users praising its ability to solve integration issues, provide excellent support, and offer quick solutions to problems. Customers appreciate the app's functionality in handling character limits and ZIP code rules effectively. The developer is highly commended for being responsive, helpful, and efficient in resolving issues. Users also highlight the quick response times of the support team and the ease of use of the app.
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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