Side-by-side comparison · 24 data points
Checkout rules & functions to customize payment or delivery methods and validate address & orders.
| Essential Checkout Customizer | King Checkout Validation | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed | ||
| Last updated | — | — |
Block checkout with address, phone, order limit validation, and more
| Metric | Essential Checkout Customizer | King Checkout Validation |
|---|---|---|
| Rating | 5.0 ★ | 5.0 ★ |
| Total reviews | 2 | ★ 20 |
| Free plan | Yes | Yes |
| Pricing | Free | Free plan available |
| Built for Shopify | — | ★ Yes |
| Pricing tiers | — | 3 tiers |
| Listed features | 5 | 5 |
| Languages | 1 supported | 1 supported |
| Listed since | Jul 2026 | Mar 2024 |
Essential Checkout Customizer and King Checkout Validation are evenly matched on rating (5.0★ vs 5.0★) — the differentiator comes down to pricing fit, feature breadth, and which app's interaction pattern suits your team's workflow.
Pricing entry tiers: Essential Checkout Customizer at Free, King Checkout Validation at Free plan available. Check each app's tier structure for the capacity limits you actually need before deciding — the headline number is the same shape, but the gating shape per tier (seats, usage volume, integrations) varies.
Recommended evaluation path: install both apps' free tiers (where available) and run them in parallel on a small cohort for 7-14 days before committing. The data tables below show the per-feature breakdown — for most merchants the deciding factor will be a single integration or workflow detail that's hard to compare from listing pages alone.
This verdict is generated from the live marketplace data on this page — rating, review count, pricing tier, and category position all refresh from the canonical Shopify App Store listing every 24 hours. AppRanks does not accept payment to influence comparison outcomes; the methodology is documented on the About page and applies identically to every pair on the site.
Read each app's audit: Essential Checkout Customizer audit • King Checkout Validation audit
| Keyword | Essential Checkout Customizer | King Checkout Validation |
|---|---|---|
| max quantity | #22 | #12 |
Both Essential Checkout Customizer and King Checkout Validation offer paid plans only. Essential Checkout Customizer starts at Free; King Checkout Validation starts at Free plan available. Compare the per-tier features in the Pricing section above before committing.
Essential Checkout Customizer (5.0★, 2 reviews) and King Checkout Validation (5.0★, 20 reviews) are essentially tied on rating. Look at review velocity and individual reviewer quotes — both visible on each app's detail page — to differentiate.
AppRanks cannot separate these two on rating — both sit at 5.0★. King Checkout Validation does carry the larger published review base (20 vs 2). Read both apps' detail pages for the feature breakdown and recent listing changes.
Both apps are one-click installs from the Shopify App Store. King Checkout Validation has the deeper published review base (20 vs 2), which often — though not always — accompanies better-tested setup docs. AppRanks doesn't measure setup time directly: read the recent reviews on each app's detail page for user-reported install experience.
Essential Checkout Customizer typically suits early-stage and growth-mode teams based on its published review base (2 reviews). King Checkout Validation typically suits early-stage and growth-mode teams based on its published review base (20 reviews). A larger review base generally means the app has been exercised at scale — relevant if you are processing high volume or handling enterprise compliance requirements.
Migration support varies by app and category. Essential Checkout Customizer and King Checkout Validation both publish their export options on their marketplace listing pages (or in their support docs); some apps offer one-click import from competitors, others require CSV. The fastest check: search "import from Essential Checkout Customizer" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
