Side-by-side comparison · 24 data points
Convert your checkout into a conversion engine with custom checkout rules, fields and customizer.
| Checkout Blocks & Customizer | ZAP Contact Form Builder | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
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| Developer | ||
| Listed | ||
| Last updated | — | — |
Boost your store with top-tier form builders for seamless lead capture and data collection
| Metric | Checkout Blocks & Customizer | ZAP Contact Form Builder |
|---|---|---|
| Rating | 5.0 ★ | 5.0 ★ |
| Total reviews | ★ 11 | 1 |
| Free plan | Yes | Yes |
| Pricing | Free | Free |
| Built for Shopify | — | — |
| Listed features | ★ 5 | 3 |
| Languages | 1 supported | 1 supported |
| Listed since | May 2023 | Feb 2026 |
Checkout Blocks & Customizer and ZAP Contact Form Builder 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: Checkout Blocks & Customizer at Free, ZAP Contact Form Builder at Free. 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: Checkout Blocks & Customizer audit • ZAP Contact Form Builder audit
| Keyword | Checkout Blocks & Customizer | ZAP Contact Form Builder |
|---|---|---|
| form | #37 | #39 |
| forms | #36 | #43 |
| feedback form | #236 | #105 |
| conditional logic | #149 | #228 |
| event form | #240 | #155 |
Both Checkout Blocks & Customizer and ZAP Contact Form Builder offer paid plans only. Checkout Blocks & Customizer starts at Free; ZAP Contact Form Builder starts at Free. Compare the per-tier features in the Pricing section above before committing.
Checkout Blocks & Customizer (5.0★, 11 reviews) and ZAP Contact Form Builder (5.0★, 1 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★. Checkout Blocks & Customizer does carry the larger published review base (11 vs 1). Read both apps' detail pages for the feature breakdown and recent listing changes.
Both apps are one-click installs from the Shopify App Store. Checkout Blocks & Customizer has the deeper published review base (11 vs 1), 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.
Checkout Blocks & Customizer typically suits early-stage and growth-mode teams based on its published review base (11 reviews). ZAP Contact Form Builder typically suits early-stage and growth-mode teams based on its published review base (1 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. Checkout Blocks & Customizer and ZAP Contact Form Builder 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 ZAP Contact Form Builder" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
