GS1 Assistant (UPC EAN GTIN)

Name: GS1 Assistant (UPC EAN GTIN)
Brand: Left Foot Software
Rating: 4.9 (10 reviews)

Pricing: Free plan available
Rating: 4.9 (10)
Developer: Left Foot Software

Assign & manage valid GS1 barcodes (UPC EAN GTIN). Sell on Amazon, Google, Walmart without rejection

Getting rejected for missing or invalid GTINs? GS1 Assistant lets you buy and assign valid UPC codes, EAN codes, GTINs from official GS1 organizations, directly inside Shopify. Uses your GS1 company prefix. No resold or fake barcodes. Auto-assign UPC barcodes to new and missing products. Manage all barcodes for your products in one place. Valid GTINs enable better rankings, richer listings on Google Shopping. And no rejections on Amazon, Walmart & other marketplaces. Fully compliant from day 1.

Buy official GTIN, UPC & EAN codes from GS1 partners. No fake or resold barcodes
Buy & assign barcodes from your GS1 prefix inside Shopify. No multiple portals.
Automatically spot missing or duplicate barcodes & assign GTINs to new products
Sync product data with GS1 registries or export ready-to-upload spreadsheets
See how your products appear on Amazon, Google & Walmart before you go live.

Languages

English, German, and Italian

Works with

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

Pricing

Free

Features

GTIN Validation (Format & Check Digit)
GTIN Status Visibility (OK/Discontinued)
Duplicate GTIN Detection
Verified by GS1 Status & Details
Manage Your Company Prefixes
Multiple Region Export Format Support
API Access (where supported)
Assign Upto 20 GTINs

Basic

$4.99 / month

or $49.99/year and save 17%

Features

Include Everything From Free Plan
Assign Upto 500 GTINs

Pro

$11.99 / month

or $110/year and save 24%

Features

Include Everything From Free Plan
Assign Unlimited GTINs

All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.

Reviews (10)

Overall rating

4.9

Counts per rating level

90% of ratings are 5 stars
9
0% of ratings are 4 stars
0% of ratings are 3 stars
0% of ratings are 2 stars
10% of ratings are 1 stars
1

All reviews

April 24, 2026

First class app with first class support. If you need barcodes then this is the only app you need. It can connect to your GS1 account is needed. We have been using this app for 2+ years and in that time have been able to use the barcodes ( Ean and UPC ) to upload products to Amazon , eBay and Etsy ). We also use the barcodes internally for stock verification when picking and packing. This app is ideal and support has always been there if needed. First class app which is easy to use and has the features and integrations you need in 2026.

TESLARY

Ireland

About 1 year using the app

March 13, 2025

We have been using the app for a few months now and must say it is the best thing that is available for GS1 code management. We have no prior knowledge and the app makes its extremely easy to navigate the complex world of EANS, GTINS etc.

Support is also 5 star. Special thank you to Brain, who is extremely is responsive and kind enough to arrange a call to help get through any difficulty.

The app is very easy to use , and is money well spent for the price. Overall great experience and highly recommended.

Thank you GS1 Team!

ÚCHÈ Fashion Brand

United States

4 months using the app

Left Foot Software replied April 24, 2026

Hey, thanks so much for the kind words! Really glad the app has been making GS1 code management easier for you, especially coming in without much prior experience with EANs and GTINs. That stuff can genuinely feel overwhelming at first. I'll pass your shoutout along to the rest of the team too. If you ever get stuck or need a hand with anything, just reach out. Thanks again for recommending us! 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