
Helium 10
Jungle Scout
Sellics
AMZScout
Teikametrics
DataHawk.co
Viral Launch
Seller App’s Smart-Data helps for Amazon Growth, Calculate Profits, PPC Campaigns, In-depth Keywords & Product Research, Analyze Competition and more.

Barcode & QR Code Scanner
GS1 US Data Hub
Ecommerce Tools AI
Onelinetoolstack
QR Droid
ShopSavvy
ZBar bar code reader
Check digits, UPC↔EAN conversion, ISBN, IBAN validation and bulk barcode checks. Free, instant, no sign-up.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | sellerapp.com | code-classify.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Italia · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


SellerApp is a behavioral eCommerce analytics software that provides Amazon sellers insights derived from their data through powerful tools and reports to help optimize their sales and generate more sales. This E-Commerce solution allows sellers to fully capitalize and take complete advantage of...
CodeClassify is a suite of 16 free, browser-based tools plus a deterministic REST API and downloadable CSV datasets for validating, converting and classifying product and business codes: GTIN/UPC/EAN barcode check digits, ISBN, IBAN (MOD-97), EU VAT, VIN, SSCC pallet codes, ISO 6346 containers,...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
SellerApp is recommended for small to medium-sized Amazon sellers, e-commerce businesses looking to expand their reach, and those who are new to the Amazon marketplace and need guidance. It's also beneficial for experienced sellers who want to leverage data to gain a competitive edge.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Best Amazon FBA Product Research Tool 2020 - SellerApp Feature Tutorial
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing SellerApp and CodeClassify.
CodeClassify's answer:
E-commerce sellers & ops validating GTIN/UPC/EAN before listing on Amazon, eBay or Shopify
Developers & data engineers needing a deterministic API for bulk validation and classification
Accountants & analysts working with NAICS/SIC business codes
Logistics, customs & trade teams handling HS codes, SSCC pallets and ISO 6346 containers
Finance/fintech teams checking IBAN, EU VAT and routing numbers
CodeClassify's answer:
CodeClassify is deterministic: every result is computed from official public standards (GS1 Mod-10, ISO 13616, ISO 3779, U.S. Census NAICS/SIC, U.S. HTS), so the same input always returns the same output — no AI guessing, no invented codes. It's also unusually broad: one place to validate, convert and classify barcodes (GTIN/UPC/EAN), ISBN, IBAN, EU VAT, VIN, SSCC, ISO 6346 containers, ABA routing numbers, and business codes (NAICS/SIC/HS) — as free browser tools, a REST API, and downloadable datasets.
CodeClassify's answer:
CodeClassify runs on Cloudflare Pages for the static tools and Cloudflare Workers + D1 for the API and dashboard. The validation and classification logic is implemented directly from official public standards and datasets (GS1, ISO, U.S. Census, U.S. HTS). Payments are handled by Stripe, and the API is also distributed on RapidAPI.
CodeClassify's answer:
Most alternatives are single-purpose (just barcodes, or just IBAN) or AI-based classifiers that can hallucinate codes that don't exist. CodeClassify covers every major product and business code in one place, computes results from official standards (auditable and repeatable), and offers three ways to use it: free tools with no sign-up, a deterministic API for bulk and automation, and clean CSV datasets. It's built for feeds, compliance and data pipelines where "the same answer every time" matters.
CodeClassify's answer:
CodeClassify started from a simple frustration: product and business codes are everywhere, but checking them meant a dozen scattered, ad-heavy sites — and newer "AI" tools would confidently return codes that don't exist. The goal was one clean, fast place that computes every answer from the official standard, keeps the everyday tools free and sign-up-free, and offers an API and datasets for teams that need to work at scale.
Share your experience with using SellerApp and CodeClassify. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


The Amazon Listing Optimization Tool from the SellerApp analyses the searchability and attractiveness of listings and provides implementable listing improvement suggestions.
SellerApp also offers paid programs that vary based on included features. You can even get a customized plan for your business. Unfortunately, SellerApp only has a 7-day free trial, but it should be long enough to try...
Seller App is a great tool for Amazon Listing Optimization. The SellerApp’s Listing Optimizer analyses the visibility of your listing for the keywords in your listing – verifying the search rank and the position of...
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