The 10 Best Kno Apps for Shopify

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

Updated September 7, 2026 · Organic ranking

The good news for this category is a plan fact that cuts the other way from most. Extensions on the thank-you and order status pages, which is where these surveys live, are available on every plan except the entry-level one. The extensions that render inside checkout itself are restricted to the top plan, and the separate post-purchase page between payment and thank-you can be occupied by only one app at a time. Surveys sit on the accessible surfaces, which is why this is one of the few checkout-adjacent things most stores can actually buy.

The awkward detail is where an answer goes. Shopify has no survey object, and its own tutorial says as much, leaving storage to the app or to metafields. There is also a timing catch worth knowing: on the thank-you page the order does not exist yet, and extensions there cannot change an order in any case. So an answer given at the most enthusiastic moment has to be attached to the customer's record afterwards rather than written onto the purchase as it happens.

  1. 1 KNO Post Purchase Surveys logo

    KNO Post Purchase Surveys

    4.9 (117 reviews) · Free trial available

    Unlock customer insights to improve retention and drive growth

  2. 2 Fairing Post Purchase Surveys logo

    Fairing Post Purchase Surveys

    5.0 (195 reviews) · Free plan available

    Post-purchase surveys, AI insights, NPS, MCP, and more.

  3. 3 KYC | Know Your Customer logo

    KYC | Know Your Customer

    4.6 (24 reviews) · Free plan available

    Identify risky buyers and manage checkout options smarter

  4. 4 Notify Me! Back in Stock Alert logo

    Notify Me! Back in Stock Alert

    4.9 (3,739 reviews) · Free plan available

    Waitlist, preorder, wishlist and low stock - all in one app.

    Built for Shopify
  5. 5 Shopify Knowledge Base logo

    Shopify Knowledge Base

    3.5 (27 reviews) · Free

    Customize FAQs used by AI agents to answer shopper questions

  6. 6 Attrac Popup, Announcement Bar logo

    Attrac Popup, Announcement Bar

    5.0 (1,117 reviews) · Free plan available

    Add bar, banner, pop up window, marquee header,countdown timer

    Built for Shopify
  7. 7 Preorder Now Presale Timesact logo

    Preorder Now Presale Timesact

    4.9 (2,060 reviews) · Free plan available

    Use pre order now with back in stock waitlist & restock alerts

    Built for Shopify
  8. 8 Preorder, Back In Stock ‑ STOQ logo

    Preorder, Back In Stock ‑ STOQ

    5.0 (3,666 reviews) · Free plan available

    Grow sales with preorders, 'notify me' & back in stock alerts

    Built for Shopify
  9. 9 Preorder, Back In Stock REZ logo

    Preorder, Back In Stock REZ

    5.0 (1,517 reviews) · Free plan available

    Do Pre order, notify me, back in stock alert backorder presale

    Built for Shopify
  10. 10 EU Withdrawal Button & Form logo

    EU Withdrawal Button & Form

    4.9 (2,292 reviews) · Free plan available

    Easily comply with EU withdrawal requirements 2023/2673

    Built for Shopify

Compare the top 3 head-to-head

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What to look for in a Kno app

Where the answers end up
Attribution data is only worth collecting if it reaches the place you make decisions. Ask whether responses land on the order or customer in Shopify, or only inside the app and whatever it syncs to, because the second means your answer to "where did customers hear about us" leaves when the subscription does.
One question, asked well
This is the single moment a customer is most inclined to answer and it lasts about ten seconds. Tools that encourage a page of questions are working against you. Judge these on how good the one-question experience is and on response rates, not on how many question types they support.
What it does with the attribution it gathers
Self-reported attribution is most useful compared against what your analytics believes, and the two will disagree. Look for reporting that shows both rather than one that presents survey answers as the truth, since the value is in the gap between them.

Frequently asked questions

Which is the best Kno app for Shopify?

Based on the Shopify App Store's own organic ranking for "kno", KNO Post Purchase Surveys currently holds the #1 spot, with a 4.9 star rating across 117 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 "kno", 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 "kno", you can verify the current ranking there yourself.

Which Kno apps are Built for Shopify?

6 of the top 10 kno apps hold the Built for Shopify badge: Notify Me! Back in Stock Alert, Attrac Popup, Announcement Bar, Preorder Now Presale Timesact, Preorder, Back In Stock ‑ STOQ, Preorder, Back In Stock REZ 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 September 7, 2026, the top-ranked kno app on the Shopify App Store is KNO Post Purchase Surveys, with a 4.9 star rating across 117 reviews. 6 of the top 10 carry the Built for Shopify badge, and the average rating is 4.8 stars across 14,754 reviews.

Related keyword rankings

All Kno rankings →   ·   Browse all keywords →

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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.

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