The 10 Best Captcha Apps for Shopify

The top 10 apps merchants see when they search the Shopify App Store for captcha, in the exact order the store ranks them. Only Shopify's organic ranking is shown, never sponsored ads.

Updated August 26, 2026 · Organic results only
  1. 1 Powerful Contact Form Builder logo

    Powerful Contact Form Builder

    4.9 (2,350 reviews) · Free plan available

    Your all-in-one form app for custom forms, registration forms

    Built for Shopify
  2. 2 Formful – Contact Form Builder logo

    Formful – Contact Form Builder

    4.6 (95 reviews) · Free plan available

    Multi-language form builder with captcha and upload fields

    Built for Shopify
  3. 3 Cart Block: checkout validator logo

    Cart Block: checkout validator

    4.9 (17 reviews) · Free plan available

    Block or validate orders in product, cart and checkout page

    Built for Shopify
  4. 4 Blocky Fraud Filter IP Blocker logo

    Blocky Fraud Filter IP Blocker

    4.7 (327 reviews) · Free plan available

    Block fraud with bot protection, country blocker & bot blocker

    Built for Shopify
  5. 5 Hulk Contact Form Builder logo

    Hulk Contact Form Builder

    4.9 (1,902 reviews) · Free plan available

    Easy contact us form, custom forms & survey with form builder

    Built for Shopify
  6. 6 Honeypot Guard logo

    Honeypot Guard

    · Free

    Invisible anti-spam protection. No CAPTCHAs, no customer frict

  7. 7 SureCust Forms Builder, Locks logo

    SureCust Forms Builder, Locks

    4.9 (98 reviews) · Free plan available

    Build custom forms, wholesale registration & approve customers

    Built for Shopify
  8. 8 Lemin CAPTCHA logo

    Lemin CAPTCHA

    1.0 (1 reviews) · Free to install

    Protect your store from bots and attacks with Lemin Captcha.

  9. 9 FormGuard ‑ Spam Blocker logo

    FormGuard ‑ Spam Blocker

    · Free

    Block contact form spam with ease. No captcha needed.

  10. 10 K: Contact Form Builder logo

    K: Contact Form Builder

    5.0 (70 reviews) · Free

    Create custom contact us forms to collect requests with ease.

Frequently asked questions

Which is the best Captcha app for Shopify?

Based on the Shopify App Store's own organic ranking for "captcha", Powerful Contact Form Builder currently holds the #1 spot, with a 4.9 star rating across 2,350 reviews. The best choice for your store still depends on your requirements, so compare the top results above.

How is this ranking determined?

We record the organic results merchants actually see when searching the Shopify App Store for "captcha", refreshed daily. Sponsored ("Ad") placements are excluded, so positions reflect Shopify's real search ranking rather than paid promotion. Source: the Shopify App Store search results for "captcha", you can verify the current ranking there yourself.

Which Captcha apps are Built for Shopify?

6 of the top 10 captcha apps hold the Built for Shopify badge: Powerful Contact Form Builder, Formful – Contact Form Builder, Cart Block: checkout validator, Blocky Fraud Filter IP Blocker, Hulk Contact Form Builder and more.

What does the Built for Shopify badge mean?

Built for Shopify
Built for Shopify is the highest level of recognition Shopify awards an app. To earn the badge, an app must meet Shopify's standards for safety, performance, ease of use, and proven usefulness: it cannot slow down the admin, storefront, or checkout, must integrate seamlessly into the Shopify admin, and must demonstrate quality through installs, reviews, and ratings over time. When comparing similar apps, preferring ones with the badge is a safe default. Learn more about the Built for Shopify badge →

As of August 26, 2026, the top-ranked captcha app on the Shopify App Store is Powerful Contact Form Builder, with a 4.9 star rating across 2,350 reviews. 6 of the top 10 carry the Built for Shopify badge, and the average rating is 4.4 stars across 4,860 reviews.

Related keyword rankings

All Captcha rankings →   ·   Browse all keywords →

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