Reviews: King Checkout Validation

Customer reviews: King Checkout Validation

Reviews (11)

Overall rating

5

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What Merchants Think

Merchants regard "King Checkout Validation" highly for its ability to address specific needs such as character limits and postal code restrictions. The app's seamless integration and customization capability, coupled with outstanding support, have made it a valuable tool for businesses aiming to enhance their checkout processes.

Key Strengths

Effective solutions for field character limits and ZIP code restrictions
High level of customization for checkout rules
Exceptional and responsive customer support
Seamless integration with existing systems, including SAP and Shopify
Prompt development of new features based on user feedback

Common Concerns

Occasionally encounters limitations due to restrictions on Shopify's end

Final Thoughts

"King Checkout Validation" is praised for its reliability and comprehensive support, making it an indispensable tool for improving checkout processes. The app's ability to adapt through prompt updates and responsive customer service has solidified its reputation as a top recommendation among merchants seeking greater control over their e-commerce operations.

Aqua-Birne

Nov 15, 2025 on Shopify

Danke für die Hilfe vom Support, macht bis jetzt einen guten Eindruck. :)

Gorilla Sports

Sep 12, 2025 on Shopify

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.

Stur Drinks

Jul 25, 2025 on Shopify

This is a fantastic product and the developer is extremely responsive and helpful! Great app!

GS-DEV-Stage

Jun 19, 2025 on Shopify

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.

alberoshop.it | Arreda la tua tavola

May 14, 2025 on Shopify

Great app and best support!

VIVAIA Korea

Mar 20, 2025 on Shopify

He is an exceptional developer—truly the best. When it came to the new Shopify field, he resolved it immediately. His expertise and efficiency are truly remarkable. Once again, I would like to express my deepest gratitude for your support and dedication. Your contributions have been invaluable, and I hold your work in the highest regard.

A.Kjærbede

Feb 10, 2025 on Shopify

Created a new functionality, the day after reaching out on chat for advise on how to setup a feature, and testing the initial solution.

Simona's Luxury at Home

Feb 06, 2025 on Shopify

The app does its job smoothly and the support team is very quick to answer inquires and to fix issues. Gordon was a great help with the problems we have encountered.

Nozi

Aug 19, 2024 on Shopify

Very happy with the app for now! We installed it and works really easy. Also very quick customer service for any question!

Flying Tiger Copenhagen

May 21, 2024 on Shopify

Very good app for checkout validation, and the support team is very responsive.

Cape Town Origins

Apr 12, 2024 on Shopify

Gordon helped me very fast with solving an issue i had with the checkout. Thank you so much and i deff. recommend this app.