Your Meta dashboard claims the sale. Google Ads claims it too. GA4 files it under direct traffic. The customer, if you asked, would say a friend told them about you, or they heard your brand on a podcast. None of those tools can see that, so budget decisions get made on partial data.

A post-purchase survey app closes part of that gap by asking the buyer directly. A short “How did you hear about us?” question appears on the thank-you page right after checkout, when the purchase is fresh and the customer is still on your site. Each answer is tied to the order, so you can compare channels by revenue, not just by click.

Below, we compare five well-known post-purchase survey apps, note which ones run only on Shopify and which also support WooCommerce, and explain what changed on Shopify’s thank-you and order status pages in 2026. Survey data works best next to clean analytics, so if your purchase tracking is not set up yet, start with our guide to GA4 ecommerce tracking.

Editorial note: this article contains no affiliate links. Prices and features were checked against each vendor’s official pages on November 12, 2026, and we have not hands-on tested these tools. Vendors change plans often, so confirm current pricing before you buy.

Why Your Pixels Miss Part of the Story

Nielsen’s 2021 Trust in Advertising study found that 88% of global respondents trust recommendations from people they know more than any other channel. That matters for attribution because word of mouth leaves no click. A shopper who hears about you from a friend, then types your URL or searches your brand name, shows up as direct or branded search traffic. Consent banners, ad blockers and cross-device journeys hide still more touchpoints.

A survey does not replace tracking. It adds a second, self-reported view that you can set beside your conversion tracking software and ad platform reports. When the two disagree sharply, test before scaling spend.

Where the Survey Lives: Shopify’s Thank-You Page Changes

Most post-purchase surveys sit on the order confirmation page. On Shopify, that is the Thank you page, plus the Order status page customers return to later. For years, many stores added survey and tracking code to these pages through the Additional scripts box. Shopify’s help center says Additional scripts became view-only on August 28, 2025, and that August 26, 2026 was the deadline for non-Plus stores to upgrade to the new versions of these pages. Customizations on the old pages need to be replaced on the new ones.

In practice, that means your survey app should support the upgraded pages through Shopify’s checkout extensions rather than pasted script. Fairing and Grapevine both list Checkout Extensions under “Works with” on the Shopify App Store, and Zigpoll lists Checkout.

On WooCommerce, the order received page is a theme template, so survey tools add a code snippet or template hook there. Retest the placement after theme updates.

1. Fairing — Best Established Attribution Survey

Best for: Shopify brands spending across several ad channels that want a dedicated attribution survey, plus WooCommerce stores willing to add a PHP snippet.

What Fairing does well

• Runs surveys on the Shopify thank-you and order status pages, with unlimited questions and responses on every plan, including the free one.
• Analyzes lifetime value by survey response, adds AI-generated attribution insights and NPS surveys, and lists 25+ integrations including Klaviyo, Triple Whale, Google Sheets and Shopify Flow.
• Has documented setups beyond standard Shopify: a headless Shopify integration and a WooCommerce guide that places the survey under the “Order Received” heading.

Potential drawbacks

• Pricing is based on monthly orders, so cost rises as you grow even if response volume stays the same.
• The WooCommerce setup requires running custom PHP through a snippets plugin, a child theme or a template override, which is developer territory for many stores.
• The Shopify listing shows plans up to 5,000 orders per month. Pricing above that, and pricing for WooCommerce stores, is not published there.

Pricing

Free: up to 200 orders/month. $49/month: 201 to 500 orders. $99/month: 501 to 1,000 orders. $149/month: 1,001 to 5,000 orders. Paid plans include a 14-day free trial, and all plans list the same features. We could not confirm pricing above 5,000 orders or for WooCommerce stores, so contact Fairing for those. Source: Fairing Post Purchase Surveys Shopify App Store listing, checked November 12, 2026.

See Fairing Pricing →

2. KnoCommerce — Best for Customer Research and Non-Shopify Stores

Best for: Brands that want to go beyond one attribution question into customer research, and stores on WooCommerce, BigCommerce or a custom stack that need a supported embed.

What KnoCommerce does well

• Offers 30+ survey templates, conditional logic, 12 question types on Analyst, attribution reports and benchmarks, so one survey can cover attribution, product feedback and market research.
• Lists integrations with Klaviyo, Google Analytics, Triple Whale, Peel Insights, ReCharge, TikTok and Shopify Flow, plus a REST API for your own data stack.
• Provides a Universal Embed for WooCommerce, BigCommerce and other platforms outside Shopify, which passes the order ID, order total and customer details to the survey.

Potential drawbacks

• Starter is limited to 1 survey with 3 questions, and the listing shows active integrations starting on Analyst.
• The jump from Starter at $19/month to Analyst at $119/month is large for small stores.
• The Universal Embed for non-Shopify stores is available on Analyst and above, and requires adding code to your confirmation page.

Pricing

Starter: $19/month, 1 survey, 3 questions per survey, unlimited responses. Analyst: $119/month, 2 surveys, 4 audiences, 2 active integrations. Pro: $299/month, 4 surveys, unlimited audiences, 4 active integrations and survey links. Each plan has a 7-day free trial, and the NPS add-on costs extra. Source: KNO Post Purchase Surveys Shopify App Store listing and KnoCommerce help center, checked November 12, 2026.

See KnoCommerce Plans →

3. Zigpoll — Best Free Plan and Multi-Channel Surveys

Best for: Shopify stores that want to start free and run attribution, on-site, email and SMS surveys from one app.

What Zigpoll does well

• Covers post-purchase, exit-intent, product page, email, SMS and Shopify POS surveys, and its “How did you hear about us?” reports compare revenue and AOV by channel.
• AI sorts open-ended answers into themes and sends weekly insight reports, which saves time when you ask free-text questions.
• Syncs with Klaviyo, Shopify Flow, Google Sheets, Mailchimp, ActiveCampaign and Gorgias, and lists Google Analytics. It holds a 5.0 rating from 604 reviews on the Shopify App Store.

Potential drawbacks

• Plans are capped by monthly responses, and the free plan includes only 50, so a busy store will outgrow it quickly.
• API and MCP access start on Advanced at $129/month.
• Zigpoll is built as a Shopify app. Its own site describes it as not intended for WooCommerce.

Pricing

Free (Lite): 50 responses/month. Standard: $39/month or $348/year, 200 responses/month, adds white label domains. Advanced: $129/month or $1,164/year, 600 responses/month, adds API and MCP access. Premier: $399/month or $3,588/year, unlimited responses. Source: Zigpoll Customer Surveys Shopify App Store listing, checked November 12, 2026.

See Zigpoll Plans →

4. Grapevine — Best Flat-Price Shopify App

Best for: Small and mid-size Shopify stores that want unlimited post-purchase survey responses at one predictable monthly price.

What Grapevine does well

• One plan includes every feature, survey type and integration, with unlimited surveys and responses and no overage fees.
• Reports revenue and AOV by marketing channel and targets surveys by order value, product, country, payment method and customer type.
• Lists GA4, Klaviyo, Google Sheets and Shopify Flow, supports the Thank you and Order status pages through checkout extensions, and runs on every Shopify plan from Basic to Plus. It holds a 5.0 rating from 240 reviews.

Potential drawbacks

• It is Shopify only. The pricing page mentions no other platforms.
• There is no free plan, only a 14-day free trial.
• It is a smaller vendor, so test support response times during your trial.

Pricing

Complete plan: $25/month with unlimited surveys and responses, all features and all integrations. 14-day free trial, no annual contract. Source: Grapevine pricing page and Shopify App Store listing, checked November 12, 2026.

See Grapevine Pricing →

5. Okendo Surveys — Best for Brands Already on Okendo

Best for: Shopify brands that already use Okendo for reviews, loyalty or quizzes and want survey answers stored in the same customer profiles.

What Okendo Surveys does well

• Deploys surveys post-checkout on the order confirmation page, onsite, by email or by shareable link, and Okendo’s own guide recommends asking “How did you hear about us?” there.
• Offers 50+ templates, 8 question types, branching logic, incentives to lift response rates, and responses saved to customer profiles.
• Survey data can be pushed to Klaviyo and Attentive, and Okendo says surveys and responses are unlimited.

Potential drawbacks

• Surveys pricing is not published per tier. You choose an order-volume band and many options route to sales.
• It is built for Shopify, and headless support is listed as an add-on. We found no WooCommerce support.
• Its attribution reporting is less specialized than Fairing’s or KnoCommerce’s. The Surveys page did not mention attribution reports or GA4 in our check.

Pricing

We could not confirm a price for Okendo Surveys. The official pricing page sells Surveys on its own and in bundles (Attract, Convert and Retain), which it says cost 30% less than buying products separately, with pricing based on monthly orders in bands from 0 to 200 up to 10,001+. It did not show per-tier Surveys prices in our check, so request a quote. Source: Okendo pricing page, checked November 12, 2026.

Check Okendo Pricing →

Post-Purchase Survey Apps Compared Side by Side

Which Post-Purchase Survey App Is Right for You?

Use this decision path to narrow it down in about a minute.

What to Look for in a Post-Purchase Survey App

• Thank-you page support. On Shopify, confirm the app works on the upgraded Thank you and Order status pages through checkout extensions, not legacy script.
• Order-level reporting. Look for revenue, AOV and repeat purchase rate by answer, not just a count of responses.
• Integrations. Sending answers to Klaviyo lets you segment by acquisition channel, and a GA4 or Google Sheets connection makes it easier to compare survey data with tracked conversions.
• Pricing model. Order-based, response-based and flat pricing behave very differently as you grow. Model your cost at two and three times your current volume.
• Platform fit. Only Fairing and KnoCommerce in this list document WooCommerce setups. Check how the survey is placed and who maintains the code.

Quick Wins You Can Make Before Buying Anything

1. Write one clear question. “How did you first hear about us?” with 6 to 10 options, including podcast, friend or family, and an “Other” free-text field.
2. Randomize answer order. Fixed lists favor whatever appears first, which skews your data.
3. Match options to your spend. List every channel you pay for so you can compare survey share with ad platform claims.
4. Check your thank-you page. Place a test order and confirm any old scripts or surveys still render after Shopify’s page upgrade.
5. Tag answers in your email platform. Sending answers to Klaviyo lets you tailor welcome flows by acquisition channel.

Frequently Asked Questions

What is a post-purchase survey app?

It shows a short survey to customers right after checkout, usually on the order confirmation page, and links each answer to the order so you can report on revenue by response.

Why use a “How did you hear about us?” survey if I already have GA4?

GA4 and ad platforms only see trackable clicks and views. Word of mouth, podcasts and offline ads often show up as direct traffic, and a survey captures what the customer remembers.

Is self-reported attribution accurate?

Not on its own. Customers forget and often name the last thing they noticed, so compare survey data with tracked data rather than replacing either.

Did Shopify’s 2026 checkout changes affect post-purchase surveys?

Yes. Shopify made Additional scripts view-only in August 2025 and set August 26, 2026 as the deadline for non-Plus stores to upgrade the Thank you and Order status pages. Surveys added through old script need to be replaced with an app that supports the new pages.

Can I run a post-purchase survey on WooCommerce?

Yes. Fairing documents a PHP snippet that places its survey on the order received page, and KnoCommerce offers a Universal Embed on its Analyst plan and above. Both need some code work.

How many questions should a post-purchase survey have?

Start with one attribution question, then add one or two optional follow-ups, since each extra question lowers completion. For ongoing feedback beyond checkout, see our guide to the best customer feedback software.

How much do post-purchase survey apps cost?

Among the tools above, Fairing and Zigpoll have free plans, Grapevine costs $25/month, and KnoCommerce starts at $19/month. Okendo does not publish a Surveys price.

Can someone help me act on the survey data?

Yes. Our performance marketing team can help you compare survey data with ad platform reporting and reallocate spend.

Final Verdict: Which Post-Purchase Survey App Should You Choose?

For most Shopify stores, Fairing is the safe starting point: it is built around attribution, starts free up to 200 orders and also documents WooCommerce and headless setups. If you want unlimited responses at a low flat price, Grapevine at $25/month is hard to beat on Shopify. Choose Zigpoll for a free plan and multi-channel surveys, KnoCommerce for deeper research or a supported embed outside Shopify, and Okendo Surveys if you already run Okendo.

Your next step: add one “How did you first hear about us?” question to your thank-you page, collect at least a month of answers, then compare each channel’s share of responses with the share of sales your ad platforms claim. Test the biggest gap first.

Sources

• Nielsen: Beyond martech, building trust with consumers (Trust in Advertising 2021)
• KnoCommerce: How to increase survey response rate
• Shopify Help Center: Checkout Extensibility upgrade guide
• Fairing Post Purchase Surveys on the Shopify App Store
• Fairing docs: WooCommerce
• Fairing docs: Headless integration
• KNO Post Purchase Surveys on the Shopify App Store
• KnoCommerce help center: Universal Embed for WooCommerce, BigCommerce and other platforms
• Zigpoll Customer Surveys on the Shopify App Store
• Zigpoll: Which survey tools work on WordPress and WooCommerce?
• Grapevine Surveys pricing
• Grapevine Post Purchase Survey on the Shopify App Store
• Okendo Surveys
• Okendo pricing
• Okendo: Post-purchase lifecycle surveys guide

About the author

Jaykishan Panchal

Founder & CEO, TechCognate · SEO Strategist & WordPress Expert

Jaykishan Panchal is the founder of TechCognate and an SEO strategist with 15+ years of hands-on experience driving organic growth for businesses worldwide. He specialises in technical SEO, content strategy and GEO (Generative Engine Optimisation), helping brands stay visible in both traditional search and AI-driven discovery.

• Technical SEO
• Content Strategy
• AI & GEO
• Google Ads
• E-Commerce SEO

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