GS1 Assistant (UPC EAN GTIN)

Name: GS1 Assistant (UPC EAN GTIN)
Brand: Left Foot Software
Rating: 4.0 (12 reviews)

Pricing: Free to install. Usage charges apply.
Rating: 4.0 (12)
Developer: Left Foot Software

Assign GS1 barcodes to every variant, and find missing or duplicate UPC codes and EAN codes.

For brands that make their own products and license barcodes from GS1. GS1 Assistant assigns GTINs (UPC barcodes and EAN codes) from your GS1 company prefix to your variants, one at a time or in bulk, and writes each to the barcode field. It shows which products have missing, invalid or duplicate GTINs. Where your GS1 organization has an API, Auto Sync sends your products to GS1. US brands can license a GS1 prefix in the app. Every plan includes email & online setup help.

Assign GTINs from your own GS1 prefix to one variant or your whole catalog.
Flags missing, invalid and duplicate GTIN barcodes. Download as SVG or PNG.
Import files for GS1 UK, US, Canada, France, Norway and Romania.
Auto Sync to GS1 Germany, Netherlands, Sweden and Brazil.
US brands can license an official GS1 company prefix inside the app.

Languages

English, German, Italian, Dutch, and Portuguese (Brazil)

Works with

Shopify Flow
Shopify Admin
GS1 Brazil
GS1 Germany
GS1 Netherlands
GS1 Sweden
GS1 US Channel Partner
Verified by GS1

Estimate your monthly charges

Rounded up to the nearest dollar

Assign GTIN's

Per month 0

Pricing

Choose the plan that best fits your business.

Essential

$0 / month

Plus usage charges

Features

Supports prefixes up to 100 GTINs
Assign GTIN/ UPC/ EAN to your products
Identify missing and invalid GTINs
Import files for 10 GS1 organizations
Email + Zoom setup & onboarding support

Monthly usage total

Cost

First Assign GTIN's

Free

2 to 10 Assign GTIN's

$4.99

11+ Assign GTIN's

$9.99

Your monthly usage total determines the cost for all usage

Growth

$4.99 / month

Plus usage charges

Features

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

Monthly usage tier

Cost per unit

First Assign GTIN's

Free

2 to 10 Assign GTIN's

11 to 100 Assign GTIN's

$0.50

101 to 1,000 Assign GTIN's

$0.05

1,001+ Assign GTIN's

$0.01

Each tier's cost per unit only applies to usage within that tier

Automation

$29.99 / month

or $299.99/year and save 17%

Features

Include Everything From Growth Plan
Supports all GS1 company prefixes
Auto-assign GTINs to new products
Auto Sync where your GS1 has an API
Priority Email + Zoom support

All charges are billed in USD. Recurring and usage-based charges are billed every 30 days. See all pricing options

Reviews (12)

Overall rating

Counts per rating level

92% of ratings are 5 stars
11
0% of ratings are 4 stars
0% of ratings are 3 stars
0% of ratings are 2 stars
8% of ratings are 1 stars
1

All reviews

August 5, 2026

There is no active help center. Also, if you have 500 products, there’s no way to upload them all to the GS1 database in a single file. Furthermore, there is no integration between GS and Shopify.

Saintby

Poland

About 6 hours using the app

Left Foot Software replied August 5, 2026

Thank you for your feedback. I'm sorry GS1 Assistant didn't meet your expectations.

The app does include an in-app Help Center, accessible from the ? button in the lower-right corner. We're continually expanding the documentation and FAQs based on customer feedback.

GS1 is made up of independent Member Organizations, and each provides different technical capabilities. Some support direct API integration, while others provide import formats that allow us to generate files from Shopify. Unfortunately, not every GS1 organization currently provides a supported import format, so the available workflow varies by region.

We are actively expanding support for additional GS1 organizations as merchants share their import requirements with us. If you contact support, we'd be happy to review your specific GS1 organization and discuss the options available.

June 4, 2026

Excellent app and outstanding support.

We run a Shopify store with more than 20,000 SKUs and manage our own GS1 Norway company prefix. Before finding GS1 Assistant, our workflow relied heavily on manual Excel spreadsheets, GS1 imports, and countless hours of administrative work.

From the very first email, Brian was incredibly responsive and helpful. He took the time to understand our unique business model, where a single retro game can exist in multiple variants and conditions, each requiring its own GTIN. Not only did he answer every question thoroughly, but he also implemented support for the GS1 Norway import format specifically to help us streamline our workflow.

Throughout the process, communication was excellent. We received direct assistance, onboarding guidance, troubleshooting help, and even new features based on our feedback. When we encountered challenges, they were addressed quickly and professionally.

The app now allows us to assign and manage GTINs directly from Shopify while dramatically reducing the amount of manual work required. For businesses handling large product catalogs, especially those using GS1 prefixes and complex inventory structures, this app is a huge time saver.

What impressed us most was that the developer genuinely listened to customer feedback and continuously improved the product during our implementation.

Highly recommended for any Shopify merchant who needs professional GTIN, EAN, UPC, and GS1 management.

Easy to use, excellent support, and a developer who truly cares about customer success.

Retrospillkongen

Norway

22 days using the app

Left Foot Software replied June 23, 2026

Thank you so much for the thoughtful review and for sharing your experience.

Working with your team to streamline GTIN management for such a large catalog has been incredibly rewarding. I'm especially glad we were able to adapt the app to fit your workflow, including support for the GS1 Norway import format, and help reduce the amount of manual work involved.

Supporting merchants with complex GS1 and GTIN requirements is exactly why we built GS1 Assistant. So it's great to hear the app is making a real difference for your business.

Thank you for your feedback, collaboration, and trust throughout the process.

– Brian

March 27, 2025

An Incredibly Helpful and Time-Saving Tool!

The GS1 Assistant made working with GTINs and UPCs so much smoother and more intuitive. It takes the guesswork out of product identification and helps ensure everything is formatted and validated correctly. I was impressed by how quickly it provided accurate guidance, especially when managing large datasets. The interface is clean and user-friendly, and the step-by-step support is a huge plus. It's a must-have for anyone working with product barcodes or needing to stay GS1 compliant. Highly recommend!

Grunt Style, LLC

United States

About 1 month using the app