Quick picks
SEA SurveyFree plan, then $19 or $49 a month. The $49 Growth plan has unlimited responses, LTV by channel and A/B testing.
FairingPriced by orders, free up to 200 a month. LTV by answer on every plan, and connects to Triple Whale, Rockerbox, Measured and other attribution tools.
KnoCommerceFrom $19 a month with unlimited responses and conditional logic. Revenue and AOV by answer start on the $119 Analyst plan.
ZigpollFree plan with 50 responses a month. Thank you page, email, SMS, popups and exit intent in one app.
Grapevine$25 a month for unlimited responses and every feature. No question branching and no AI inside the app.
How we compared
We opened each app's Shopify App Store listing, pricing page and help docs on Oct 27, 2026, and wrote down only what those pages say. Prices are monthly, in USD, before any promotion. Where an app's own pages disagree, we use the App Store listing. We left out numbers that only a vendor reports about itself, like average response rates. Ratings move every week, so check the listing before you decide.
What you pay
The five apps charge for different things. SEA Survey and Zigpoll count responses. Fairing counts orders. KnoCommerce counts live surveys, questions and integrations, with unlimited responses. Grapevine has one price.
| App | Free plan | First paid plan | What makes the price go up |
|---|---|---|---|
| SEA Survey | Yes, 30 responses a month | $19, 500 responses a month | $49 for unlimited responses |
| Fairing | Yes, up to 200 orders a month | $49, 201 to 500 orders | $99 up to 1,000 orders, $149 up to 5,000 |
| KnoCommerce | No, 7 day trial | $19, 1 live survey with 3 questions | $119 for 2 surveys, $299 for 4 |
| Zigpoll | Yes, 50 responses a month | $39, 200 responses | $129 for 600, $399 for unlimited |
| Grapevine | No, 14 day trial | $25, unlimited responses | Nothing, one plan |
Take a store with 3,000 orders a month that wants to ask every buyer. SEA Survey costs $49. Fairing costs $149. Grapevine costs $25. KnoCommerce costs $119 for revenue by answer and Klaviyo. Zigpoll depends on how many buyers answer: 600 responses cost $129 and unlimited costs $399 on the App Store, with more steps in between on the Zigpoll site.
The five apps
SEA Survey
We make this one. Listed as SEA Post Purchase Survey Quiz, 4.9 stars from 186 reviews, with the Built for Shopify badge.
- Where surveys run: Thank you and Order status pages, its own post purchase email, the first question inside Klaviyo, Mailchimp, Omnisend and Shopify Email, onsite widgets and popups, exit intent on desktop, a survey page with its own link, and Shopify POS.
- Stands out: On the Growth plan, the Marketing Attribution dashboard shows revenue, AOV, repeat rate and LTV by channel. A/B testing compares two surveys with a traffic split. AI builds a survey from a goal and groups written answers into topics, free up to 2,000 responses a month. A product recommendation quiz is on every plan, Free included.
- Know before you install: The Free plan stops at 30 responses a month. Branching logic, LTV by channel, A/B testing, a discount for answering and Klaviyo need Growth. Exit intent does not run on mobile, and there is no SMS channel. Dashboard numbers cover orders that have a survey answer, not every Shopify order.
Fairing
Listed as Fairing Post Purchase Surveys, 5.0 stars from 196 reviews, on the App Store since 2018 (first as Enquire).
- Where surveys run: Thank you and Order status pages, Shopify POS, and a landing page you link from your own email or SMS tool.
- Stands out: LTV by answer is included on every plan for Shopify stores. It connects to a long list of attribution tools, including Triple Whale, Rockerbox, Measured, Fospha and Polar Analytics. Advanced Attribution, a paid extra from $99 a month, asks follow up questions to get from "YouTube" to the creator or show. A weekly AI Insights email summarizes attribution trends.
- Know before you install: The price grows with your orders, up to $499 a month at 20,001 to 30,000 orders on the Fairing site. We found no storefront popup, exit intent, discount for answering or A/B testing on its pages. Fairing does not send email or SMS itself. The app admin is English only.
KnoCommerce
Listed as KNO Post Purchase Surveys, 4.9 stars from 118 reviews.
- Where surveys run: Thank you and Order status pages on every plan. From Analyst, a link you send by email or SMS, an embed you place on any page with a script, and a Shopify POS tile. QR codes need Pro.
- Stands out: Conditional logic and unlimited responses on every plan. The Order Attribution Report shows revenue and AOV per answer, with an option to estimate as if every buyer had answered. On Analyst and up, it can create single use discount codes for people who answer. Benchmarks compare your answers with other KNO stores. It also runs on WooCommerce and BigCommerce.
- Know before you install: There is no free plan. Starter allows 1 live survey with 3 questions, no integrations and no survey links. Audiences, which decide who sees a survey, start on Analyst. We found no AI survey builder, no AI analysis inside the app and no native LTV by answer report. An MCP connector to Claude is in beta. Popups are yours to build. KNO offers new customers 50% off until the end of 2026 through its chat.
Zigpoll
Listed as Zigpoll Customer Surveys, 5.0 stars from 598 reviews, the most reviewed of the five.
- Where surveys run: Thank you and Order status pages, email, SMS, onsite popups, exit intent, links and QR codes, Shopify POS and mobile apps.
- Stands out: The widest channel list here. The attribution report shows revenue, AOV and repeat rate by channel next to Meta, Google and GA4 numbers. Discount rewards and A/B testing are on every plan, per the Zigpoll site. AI writes surveys from a prompt and sends weekly insights.
- Know before you install: Every plan below Premier ($399) has a response limit. Free plan surveys pause at 50 responses until the next month. We found no LTV by channel report. Since Sep 1, 2026, one person finishing one survey counts as one response.
Grapevine
Listed as Grapevine Post Purchase Survey, 5.0 stars from 234 reviews, with the Built for Shopify badge.
- Where surveys run: Thank you and Order status pages, one click answers inside Klaviyo and Shopify emails, survey pages with their own link, embeds and Shopify POS.
- Stands out: One plan at $25 a month with unlimited responses. Revenue per answer. Display rules by order value, products, payment method, country and more. You can connect your own Claude or ChatGPT to read the answers.
- Know before you install: No free plan. Questions do not branch on earlier answers. Grapevine has no popup or exit intent of its own, and we found no SMS channel, no AI inside the app and no LTV report. A discount for answering needs a Klaviyo workaround.
Side by side
| SEA Survey | Fairing | KnoCommerce | Zigpoll | Grapevine | |
|---|---|---|---|---|---|
| App Store rating | 4.9 (186) | 5.0 (196) | 4.9 (118) | 5.0 (598) | 5.0 (234) |
| Built for Shopify | Yes | No | No | No | Yes |
| Free plan | 30 responses | 200 orders | No | 50 responses | No |
| Priced by | Responses | Orders | Surveys, integrations | Responses | Flat |
| Thank you page | Yes | Yes | Yes | Yes | Yes |
| Yes | Through your tool | Link, Analyst | Yes | Through your tool | |
| SMS | Not listed | Link | Link, Analyst | Yes | Not listed |
| Popup and exit intent | Yes, exit intent on desktop | Not listed | Build your own | Yes | Not offered |
| Revenue by answer | Growth | Every plan | Analyst | Yes | Yes |
| LTV by answer | Growth | Every plan | Partner tools | Not listed | Not listed |
| A/B testing | Growth | Not listed | Not listed | Yes | Not listed |
| Discount for answering | Growth | Not listed | Analyst | Yes | Workaround |
| AI inside the app | Builder, topics, weekly insight | Weekly insights | Not listed | Builder, weekly insights | Not listed |
"Not listed" means we did not find it on the app's listing, pricing page or help docs on Oct 27, 2026.
How to choose
- You want to know which channel brings buyers who come back, and you also run popups or tests: SEA Survey on Growth.
- You read attribution in Triple Whale, Rockerbox or a data warehouse: Fairing.
- You need branching from day one on a small budget, and one survey is enough: KnoCommerce Starter.
- You want to reach buyers by SMS or inside your mobile app: Zigpoll.
- You want one question on the Thank you page and one price forever: Grapevine.
Whichever app you pick, start the attribution question now. Answers add up with every order, and you want a clear split between channels before Black Friday. Here is how to ask it and read the answers.
Checked Oct 27, 2026 on each app's App Store listing, pricing page and help docs: SEA Survey, Fairing, KnoCommerce, Zigpoll, Grapevine. Prices and features change. If you spot something out of date, tell us.