Grapevine
Post-purchase and email surveys for Shopify, with unlimited responses for attribution, NPS, and CSAT
Union Works Apps is a Shopify app developer based in the United Kingdom that makes Grapevine Post Purchase Survey, a surveys app on the Shopify App Store. It provides post-purchase, NPS, CSAT, and attribution surveys for Shopify merchants. Among the 15,357 Shopify brands over $5M that dtcmvp tracks, 303 (2%) run Grapevine Post Purchase Survey, #3 of 44 surveys apps by that count. Its share is highest among Pets (3.5%), Health & Wellness (2.6%) and Fashion & Apparel (2.5%) brands. It is rated 5 out of 5 from 233 reviews on the Shopify App Store. It carries Shopify's Built for Shopify badge. Grapevine Post Purchase Survey has 1 plan on the Shopify App Store, at $25 a month.
Grapevine runs post-purchase and email surveys on Shopify with unlimited responses, covering self-reported attribution, NPS, and CSAT. Useful for brands spending real money on paid acquisition who suspect GA4 is over-crediting some channels, and for teams willing to read open-text feedback and act on what almost stopped customers from buying.
What Grapevine does for Shopify brands
- Self-reported attribution exposes when GA4 over-credits paid channels (60% claimed vs 20% real)
- Reallocate ad budget toward channels with true first-touch impact, reclaim wasted spend
- Open-text post-purchase feedback surfaces objections, missing info & checkout friction
- Fixing top 2-3 friction patterns on PDP, checkout & shipping copy lifts cvr
Overview
Union Works Apps, operating as Union Works Limited, builds apps for the Shopify App Store. Its Grapevine app lets merchants run post-purchase, NPS, CSAT, attribution and customer feedback surveys. Merchants use the responses to see where customers came from and how satisfied they are.
- Built for
- Shopify merchants, including stores using Shopify POS, and the listing says it works on all Shopify plans.
- Pricing
- One plan, Complete, at $25/month, including every feature and unlimited responses with no overage fees. The App Store listing also shows a free plan, and the website offers a 14-day free trial. The site says there is no lock-in.
Products
- Grapevine Post Purchase Survey Shopify app for post-purchase, NPS, CSAT and attribution surveys with unlimited responses.
- Grapevine MCP Connects Grapevine survey data to a merchant's own AI assistant for questions.
Integrations
Buyer notes
- Works on all Shopify plans, per the App Store listing.
- Surveys can be created in multiple languages.
- Support comes directly from the four-person team that builds the app.
- Monthly pricing with no lock-in; the site says there is no annual contract.
From Grapevine's own site and Shopify App Store listings, as of 2026-10-20.
Among Shopify brands over $5M
Share of each sector's brands running it, where that beats the overall rate.
On the Shopify App Store
Grapevine Post Purchase Survey
5.0 · 233 reviewsBuilt for ShopifyFree planPaid from $25/moOn 2% of brands over $5MLaunched 2017SurveysRun post purchase, NPS, CSAT and attribution surveys on Shopify with unlimited responses on every plan. See which marketing channels really drive sales.
Pricing
Complete$25/month- Unlimited responses, no overage fees
- Post purchase, NPS, CSAT & attribution
- Works on all Shopify plans
- Revenue & AOV by marketing channel
- +4 more
14-day free trial
Ratings, reviews, plans, prices and descriptions as the Shopify App Store lists them. how we count.
Alternatives to Grapevine
The most used surveys apps among Shopify brands over $5M.
| App | Brands over $5M | App Store |
|---|---|---|
| Fairing Post Purchase Surveys · Fairing | 4.7% | 5.0 · 196 |
| KNO Post Purchase Surveys · KnoCommerce Inc | 3.4% | 4.9 · 118 |
| Zigpoll Customer Surveys · Argonautic Labs | 1.4% | 5.0 · 595 |
| SEA Post Purchase Survey Quiz · SEA Commerce by Avada | 0.2% | 4.9 · 187 |
| Asklayer Survey & NPS for pros · PEAKDIGITAL | 0.2% | 4.9 · 57 |
| Gojiberry Survey & Feedback · EDOCODE | 0.1% | 5.0 · 33 |
Often used with Grapevine
What its brands run more often than Shopify brands over $5M do overall.
- Shoplift12.2% of its brands · 2.6x average
- impact.com Affiliate Marketing12.5% of its brands · 2.4x average
- Elevar Conversion Tracking25.4% of its brands · 2.3x average
- Intelligems16.5% of its brands · 2.3x average
- Loop Returns & Exchanges20.5% of its brands · 2x average
What Shopify apps does Union Works Apps make?
Union Works Apps has 1 app on the Shopify App Store: Grapevine Post Purchase Survey.
How many Shopify brands use Union Works Apps?
Among the 15,357 Shopify brands over $5M that dtcmvp tracks, 303 (2%) run Grapevine Post Purchase Survey, #3 of 44 surveys apps by that count. Its share is highest among Pets (3.5%), Health & Wellness (2.6%) and Fashion & Apparel (2.5%) brands.
What are the alternatives to Union Works Apps?
The most used surveys apps among Shopify brands over $5M, after Union Works Apps: Fairing Post Purchase Surveys (4.7%), KNO Post Purchase Surveys (3.4%), Zigpoll Customer Surveys (1.4%), SEA Post Purchase Survey Quiz (0.2%), Asklayer Survey & NPS for pros (0.2%) and Gojiberry Survey & Feedback (0.1%).
What do Union Works Apps's brands use alongside it?
Of the brands running Union Works Apps, 12.2% also run Shoplift, 12.5% also run impact.com Affiliate Marketing, 25.4% also run Elevar Conversion Tracking, 16.5% also run Intelligems and 20.5% also run Loop Returns & Exchanges. Each is at least 2.0 times as common among them as across all brands over $5M.
How is Grapevine Post Purchase Survey rated?
Grapevine Post Purchase Survey is rated 5 out of 5 from 233 reviews on the Shopify App Store.
How much does Union Works Apps cost?
Grapevine Post Purchase Survey has 1 plan on the Shopify App Store, at $25 a month. Grapevine Post Purchase Survey: Complete, $25/month.
