The best Walmart reseller app (2026)

What's the best Walmart reseller app? The best Walmart reseller app is one that lets you scan a barcode in a store, or open a Walmart.com listing, and see in seconds whether the item will make money on Walmart Marketplace: the fees, your profit, how fast it sells, who else sells it and who wins the Buy Box. Few apps do that for Walmart. Most reselling apps are built for Amazon, and Walmart's own Seller app is for running a store you already have, not for sourcing.

Margenos makes this page, so weigh that — we've tried to be fair and link every competitor. Margenos is a Walmart reseller tool (Chrome extension and Android app) that shows whether a product is worth selling on Walmart Marketplace: fees, profit, ROI, sales estimates, every competing seller with stock, the Buy Box winner and the product's price and Buy Box history. Below: what a Walmart reselling app needs, the options compared, and which one fits how you source.

What a Walmart reseller app needs

A Walmart arbitrage app has one job: stop you from buying stock that won't sell at a profit. To do that it needs:

• Barcode scanning in the store. Point your phone at a UPC and get the matching Walmart.com listing. Name search helps when there's no barcode.
• Walmart fees and profit. The category referral fee, WFS fulfillment and storage fees by weight, then profit, ROI and the most you can pay. Amazon fees don't apply on Walmart. See Walmart seller fees.
• Sales estimates. Walmart.com has no public sales rank, so the app has to estimate demand from other signals and tell you where the number came from.
• Competing sellers and stock. How many sellers are on the listing, how much stock each holds and whether they use WFS.
• The Buy Box. Who wins it now, and whether Walmart itself sells the item. See how the Walmart Buy Box works.
• Price history. Whether today's price is normal. Walmart.com doesn't show price history, so the app has to collect its own.
• Alerts. A ping when a tracked item's price drops, a seller sells out or Walmart joins the listing.

Walmart reseller apps compared

Competitor details come from each company's site or app store listing, November 2026. Features and prices change; check their sites. Trademarks belong to their owners. Margenos is not affiliated with any of them or with Walmart.

Margenos: Android app and Chrome extension

Margenos is built only for Walmart. Scan a barcode in the store with the Android scanner app, or open any Walmart.com product with the Chrome extension, and you see Walmart fees, profit, ROI, max buy cost and breakeven, a sales estimate labeled with its source (or "not enough data"), every competing seller with stock counts, total stock, WFS vs seller-fulfilled per offer, the Buy Box winner, and price and Buy Box history from Margenos's own daily snapshots. Push alerts watch tracked items for price moves, stock-outs, and sellers or Walmart joining or leaving. You don't need a Walmart seller account to use it. Where it's weaker: no iPhone app yet, Walmart only, and it doesn't manage your orders or listings. Plans are on the pricing page.

WAMP: SellerAmp's Walmart extension

WAMP is SellerAmp's separate Walmart tool. Its site lists a $0 Beta plan ("Free for life!") with a profit calculator, charts and basic sales trends, and a Pro plan marked "coming soon". It also mentions Google Sheets integration. It's a sensible no-cost start for online sourcing if you're already a Walmart seller; its site tells non-sellers to become a Walmart seller first. Its site doesn't mention a phone app or barcode scanning, so check before relying on it in stores. More in does SellerAmp work for Walmart? and Margenos vs WAMP.

Walmart Seller app: for managing your store

Walmart's own Seller app (iPhone and Android) is free for enrolled US Marketplace sellers and logs in with your Seller Center account. Per its App Store listing and Walmart's page, it handles orders, customer messages, notifications, a sales tracker, support cases and WFS shipments and inventory. Recent versions added barcode scanning to find catalog products, and scans show whether an item is restricted, which is handy for a quick eligibility check. What it doesn't list is sourcing research: no profit math on your buy cost, competing sellers' stock or sales estimates. Most resellers use it alongside a sourcing app. See our Walmart Seller app guide.

Scan Profit, SellerAmp SAS and other Amazon apps

Scan Profit's App Store listing describes an app for building an Amazon business and calculating Amazon fees; it's free to use with optional paid plans. SellerAmp SAS is an Amazon sourcing tool with a phone scanner, Chrome extension and web app. Both are good at what they're built for. If you sell on Amazon, or buy at Walmart to resell on Amazon, use one of them. For selling on Walmart Marketplace they give you the wrong fees, the wrong competition and an Amazon sales rank that tells you nothing about Walmart demand. See best reseller apps for the Amazon and eBay side.

Which Walmart reselling app fits how you source

• Retail and clearance sourcing: you need a phone barcode scanner that knows Walmart. Margenos on Android does that; see Walmart clearance reselling.
• Online arbitrage: a Chrome extension is faster than a phone. Margenos and WAMP both work on Walmart.com pages; see online arbitrage for Walmart.
• Wholesale: you'll check many UPCs from a supplier list. Look for search by UPC and exports; see Walmart wholesale.
• Running your store day to day: Walmart's Seller app, alongside a sourcing tool.
• Selling on Amazon too: pair an Amazon app with a Walmart one. The data doesn't overlap.

How to test a reseller app on one store trip

1. Pick ten items you already know. Include a couple that sold well for you and a couple that flopped.
2. Scan each one. Note how fast the app matches the barcode to the right Walmart.com listing, and how often it misses.
3. Check the fees. Compare the app's fee and profit numbers with Walmart's published referral fees and WFS rates, or our Walmart profit calculator.
4. Look at the sellers. Does the seller list and stock match what's on the listing right now?
5. Judge the sales estimates. Does the app say where the number came from, and admit when it doesn't know?

An app that gets your known winners and losers right is one you can trust on items you don't know. That's the honest way to pick a Walmart sourcing app, whichever one you end up with. For the full checklist, see how to know if a product will sell on Walmart.

Sources: Walmart Marketplace: Seller app · Walmart Seller (App Store) · WAMP · SellerAmp · SellerAmp pricing · Scan Profit (App Store). Walmart changes its rules and apps; confirm in Seller Center.