OngoingAI

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Shopify rating
4.2 ★
13 reviews
Pricing
Free to install
Essential
Estimated monthly cost
  • • Supports prefixes up to 100 GTINs
  • • Assign GTIN/ UPC/ EAN to your products
  • • Identify missing and invalid GTINs
  • • Download GS1-ready files
  • • Email setup & onboarding support
Growth
Estimated monthly cost
  • • Include Everything From Essential Plan
  • • Supports prefixes up to 1,000 GTINs
  • • API Synchronization (where supported)
  • • Identify missing and invalid GTINs
  • • Email + Zoom setup & onboarding support
Automation
$29.99/month
or $299.99/year and save 17%
  • • Include Everything From Growth Plan
  • • Supports all GS1 company prefixes
  • • Auto-assign GTINs to new products
  • • Auto-sync to GS1 organizations with API
  • • Priority Email + Zoom support
What does GS1 Assistant (UPC EAN GTIN) do?

GTINs getting rejected on Amazon or Google Shopping? GS1 Assistant assigns UPC, EAN and GTIN barcodes from your GS1 Company Prefix, without duplicates.

  • Supports your GS1 organization's import format. Download a ready-to-upload file.
  • Ensures barcodes are formatted and validated correctly, without duplicates.
  • Upload products to Amazon, Google Shopping, eBay, Etsy, & more, with no issues.
  • Easy to use, even if you're new to GS1.
  • Fast, responsive support that listens to your feedback.

Features

SKU and barcodesAuto-generationBulk generationQR codesGTINUPCScanningDuplicate checkBarcode integrationVariants
Review history
Daily review count on the Shopify App Store
13±0 · 29d· Rating steady at 4.2★

Daily tracking from Aug 10, 2026 through today · 29 days observed · sign up free for the full history →

Category rankings
Live organic position on Shopify App Store category pages
  • SKU and barcodes
    #11▼1

Tracked daily · last 29 days · as of 2026-10-01

Catalog position
Within SKU and barcodes on the App Store
Rank by reviews
#14 of 87
Review percentile
85th
Rating percentile
66th
On the App Store
2.4 yrs
Works with
Integrations listed for GS1 Assistant (UPC EAN GTIN)
Shopify FlowShopify AdminGS1 BrazilGS1 GermanyGS1 NetherlandsGS1 SwedenGS1 US Channel PartnerVerified by GS1
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Frequently asked questions

GTINs getting rejected on Amazon or Google Shopping? GS1 Assistant assigns UPC, EAN and GTIN barcodes from your GS1 Company Prefix, without duplicates. It's a sku and barcodes tool for ecommerce stores.