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 September 13, 2026 · Organic ranking

Maintained by Rankbase, built by a Shopify app developer

Themes come with a contact form, and what it does is narrower than most people notice: it emails whoever is set as the contact recipient in your notification settings. No customer record is created, nothing is stored, and there is no consent captured, because consent belongs to a different form type entirely, the newsletter signup, which does create a customer and does record that they agreed.

That distinction explains the whole category. Every leading app here routes submissions to an outside marketing or support platform, and most of them barely mention Shopify's own customer object. These are tools for getting information out of your storefront and into the system where you actually work, with the things a plain email cannot do bolted on: file uploads, conditional questions, several steps, and something to keep the spam out.

1

Powerful Contact Form Builder

★ 4.9 (2,482 reviews) · Free plan available

Your all-in-one form app for custom forms, registration forms
Built for Shopify
2

Formful – Contact Form Builder

★ 4.6 (102 reviews) · Free plan available

Multi-language AI form builder with captcha and upload fields
Built for Shopify
3

Cart Block: checkout validator

★ 4.9 (20 reviews) · Free plan available

Block or validate orders in product, cart and checkout page
Built for Shopify
4

Blocky Fraud Filter IP Blocker

★ 4.7 (344 reviews) · Free plan available

Block customer: Bot protection, country blocker & bot blocker
Built for Shopify
5

Captcha Guard

· Free plan available

Blocks bot checkouts. Real shoppers never see a captcha.
6

FormGuard ‑ Spam Blocker

· Free

Block contact form spam with ease. No captcha needed.
7

Lemin CAPTCHA

★ 1.0 (1 reviews) · Free to install

Protect your store from bots and attacks with Lemin Captcha.
8

Hulk Contact Form Builder

★ 4.9 (1,994 reviews) · Free plan available

Easy contact us form, custom forms & survey with form builder
Built for Shopify
9

Honeypot Guard

· Free

Invisible anti-spam protection. No CAPTCHAs, no customer frict
10

K: Contact Form Builder

★ 5.0 (76 reviews) · Free

Create custom contact us forms to collect requests with ease.

Compare the top 3 head-to-head

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What to look for in a Captcha app

Decide whether submissions should become customers: A wholesale enquiry that creates a customer record with the company name attached is worth considerably more later than the same enquiry sitting in an inbox. Only some apps here do that, and it is rarely the headline feature, so ask directly rather than assuming a form on a Shopify store writes to Shopify.
A consent checkbox is not consent: If the form collects marketing permission, the permission has to be recorded with its level and origin against the customer, not merely ticked on a page. Check what the app writes, because the difference is invisible until somebody asks you to demonstrate it.
Where uploaded files end up: File upload is the most-advertised feature in this category and the least examined. Ask where the files are stored, for how long, how large they may be, and what happens to them when you stop paying, because customer artwork and documents living only inside a form app is a problem discovered at the worst time.

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 2,482 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. Shopify's own sponsored ("Ad") results are excluded, so positions reflect its 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?

5 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.

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 September 13, 2026, the top-ranked captcha app on the Shopify App Store is Powerful Contact Form Builder, with a 4.9 star rating across 2,482 reviews. 5 of the top 10 carry the Built for Shopify badge, and the average rating is 4.3 stars across 5,019 reviews.

Related keyword rankings

All Captcha rankings → · Browse all keywords →

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Rankbase helps Shopify app developers track keyword positions, analyze install click data, and optimize app listings to rank higher in the Shopify App Store.

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Built by Craftshift

Rankbase is made by Craftshift, a Shopify Partner building apps for product images, variants, and bulk catalog work. We built Rankbase to track the App Store rankings of our own apps first, then opened it to other developers, and this directory grew out of that work. The rankings on these pages are Shopify's own organic search results; we never edit them, including for our own apps.

Craftshift apps on the Shopify App Store