Shopify app
EmergingBuilt for ShopifyKing Checkout Validation
Block checkout with address validation and order limits
- Rating on Shopify
- 5.0(20)
- Reviews
- 20
- Developer
- Lightcone
- Launched
- March 15, 2024
- Pricing
- Free plan available. Free trial available.
- Languages
- English, German, Dutch, French, Italian, Spanish, Portuguese (Brazil), Japanese, Chinese (Simplified), Norwegian (Bokmål), Turkish, Finnish
The facts
Every value below is read from the listing or computed by the published formula. Nothing is a verdict.
Bayesian rating
4.62
category median 4.54
Reviews in the last 180 days
3
from the 3 reviews on the listing page
1 and 2 star share
0%
0 of 20
Starting price
$4.99/month
band: Under $10 · 7-day trial
Pricing plans as listed on Shopify
All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.
| Plan | Price | Billed yearly | Trial | Usage fee | Included |
|---|---|---|---|---|---|
| Free | Free | not offered | none | none stated | Free for development stores; Create and test validation rules |
| Basic | $4.99/month | $49.90/year | 7 days | none stated | Live chat and email support; Require house, apartment or suite number; Require VAT numbers; Block PO box addresses |
| Premium | $9.99/month | $99.90/year | 7 days | none stated | All Basic features; Detect non-Latin characters; Set checkout field length limits; Match keywords in checkout fields; Build regular expression rules; Combine cart and customer conditions |
Rating distribution
20 ratings on the listing when last refreshed.
- 5 stars20(100%)
- 4 stars0(0%)
- 3 stars0(0%)
- 2 stars0(0%)
- 1 star0(0%)
Latest reviews
The 3 most recent of 3 on-page reviews, quoted to at most 25 words each. Full reviews are on the Shopify listing.
5 starsJul 24, 2026yarnstore.deGermany1 day using the app
"Wir brauchten eine Sperre für Schweizer Rechnungsadressen, die nur bei rein digitalen Bestellungen greift. Die Bedingung dafür gab es noch nicht, also haben wir den ..."
5 starsJun 15, 2026Nemechek ProtocolUnited States3 days using the app
"Excellent product and excellent support. Many of our customers use freight-forwarding service and will forget to enter their Suite numbers in shipping addres causing the ..."
5 starsMay 10, 2026RetroUnited StatesAbout 3 hours using the app
"Support was responsive and quickly implemented support for validating a new early access Shopify field to collect a required ID number in certain countries. Really ..."
Features Shopify lists for this app
Feature handles from the listing, grouped as Shopify groups them.
Limit rules
- Cart-based
- Max quantity
- Min quantity
- Weight-based
- Price-based
- Discount-based
- Product-specific
- Variant-specific
- Collection-specific
- Customer tags
- Geolocation
- Shipping methods
Notification settings
- Checkout alerts
- Custom messages
- Multi-language
Works with
Third-party integrations link to their hub when 5 or more apps name them. Shopify's own surfaces are listed separately and never counted as integrations.
Shopify surfaces: Checkout, Shopify Admin
Data access
As disclosed on the listing. Never scored.
View customer data
Sensitive data
- Sensitive data: Name, email address, phone number, physical address
View staff and contributor data
Store owner
- Store owner: Name, email address, phone number, physical address
View and edit store data
Customers, products, Shopify Functions
- View customers: Customer data
- View products: Products, collections
- Edit Shopify Functions: Cart and checkout validations
- View other data: Locales, customer addresses, customer email addresses
Developer
Lightcone
- Apps in the dataset:
- 2
- Address:
- No. 29 Shengbao Road, Danzhu Tou Community, Nawan Street, Unit 524, Apartment Building C, Xiyuanfeng Creative Park, Shenzhen, GD, 518114, CN
- Website:
- not stated
- Support email domain:
- getalltool.com
- English support:
- yes
- Resources:
- Privacy policy, App Documentation
Similar apps
Shopify's own similar-apps list first, then apps in the same category that share the most feature handles.
Blockify Checkout Customizer
4.9(309) · listed as similar by Shopify
Essential Checkout Customizer
On Shopify, not yet in the dataset · listed as similar by Shopify
Qikify Checkout Customizer
4.9(73) · listed as similar by Shopify
Checkout Guardian
4.3(8) · shares 82% of feature handles
PW ‑ Order Limits Quantity
2.6(2) · shares 80% of feature handles
Cart Lock:Block Checkout Rules
4.8(87) · shares 76% of feature handles
From the Shopify listingDeveloper claims, shown verbatim and collapsed. 83 words.Show
- Address validation: block PO boxes and require house or apartment numbers
- Set order limits by amount, quantity or weight for products and customer tags
- Check postcode/ZIP, email and VAT/tax ID formats with checkout field rules
- Match phone country codes to shipping or billing countries
- Build keyword, regex and field-length rules with localized error messages
Block checkout with address validation, order limits and custom checkout rules.
Use checkout validation to check shipping and billing address fields before orders are placed. Block PO boxes, require house or apartment numbers, and check postcode/ZIP, email and VAT/tax ID formats. Match phone country codes to address countries. Set order limits by cart amount, quantity or weight, with conditions for products, customer tags and countries. Use keyword, regex and field-length checks. Show localized error messages so shoppers can fix issues and continue checkout.
Questions and comments
Questions people ask about King Checkout Validation, answered from what this page shows. Entries marked Site editor are written by the EcomAppReviews editor. Reader comments appear after a person has read and approved them, usually within a day. E-mail addresses are never published.
Last updated Oct 21, 2026. Ratings and review counts are the values shown on each app's public listing. How the numbers are computed: methodology.
20 reviews counted on the listing. Rating and count in the structured data are the values Shopify displayed when the listing was last refreshed.