The best reseller apps in 2026, by job

There is no single best reseller app, because reselling is three different jobs: finding products worth buying, listing them where buyers shop, and tracking inventory and profit. The best reseller apps in 2026 are the ones built for the job you need done and the marketplace you sell on. This roundup sorts the popular options by job, says what each one is good at, and is clear about which are free and which are paid.

A note on fairness: Margenos is our app, and it is in the sourcing section because that's what it does. We checked every other app's current listing or pricing page in October 2026 and link our sources at the bottom. Prices change, so confirm before you subscribe.

Which reseller app is best? The short answer

If you sell on one marketplace, pick the sourcing app made for that marketplace first. The fees, sales data and restrictions are different on Walmart and Amazon, and a tool built for one won't give you the right numbers for the other.

Sourcing and scanning apps: check profit before you buy

A reseller scanner app looks up a product by barcode or listing and shows what it sells for, what the marketplace takes in fees, and what's left for you. This is the app that saves you the most money, because it stops bad buys.

Margenos (Walmart Marketplace)

Margenos is built only for Walmart Marketplace. The Chrome extension works on any Walmart.com product page, and the Android app scans barcodes in stores. It shows Walmart referral and WFS fees, profit, ROI, the most you can pay, a sales estimate labeled with its source, every competing seller with their stock, and who holds the Buy Box. It also tracks products and sends alerts when prices, stock or sellers change. You don't need a Walmart seller account to use it. There's a 14-day free trial; the iPhone app is not out yet.

Amazon Seller app

Amazon's own Seller app is free for registered Amazon sellers on iPhone and Android. You can scan a barcode to see price, competing offers, estimated profit and whether you're allowed to sell the item, and you can manage orders and listings. It's a solid starting point if you only sell on Amazon. Third-party scanners add deeper data such as price history and Buy Box detail.

SellerAmp SAS

SellerAmp (SAS) is a popular Amazon sourcing tool with a Chrome extension and phone apps. It shows profit, ROI, sales rank, offers and restriction alerts. Its pricing page lists plans starting at $19.95 a month with a 14-day free trial.

Scoutify 2

Scoutify 2 is the mobile scanner from InventoryLab, now part of Threecolts. It's included with an InventoryLab subscription (listed at $69 a month, with a 30-day trial) rather than sold on its own, so it makes the most sense if you also want InventoryLab's listing and accounting tools.

Scan Profit

Scan Profit is an Amazon sourcing app with AI-assisted profit estimates. Its App Store listing says it's free to download with optional subscriptions for more scans and data. We found its iPhone listing; check the developer's site for the current Android version.

Profit Bandit

Profit Bandit, from SellerEngine, is one of the older Amazon scanner apps. It's free to download with a paid Pro mode. Its App Store listing hadn't been updated since March 2024 when we checked, so test it before you rely on it.

Online arbitrage tools

If you source from websites instead of store shelves, browser tools do the heavy lifting. Tactical Arbitrage scans hundreds of retail sites and matches products to Amazon listings. Keepa shows Amazon price and sales-rank history, with a free tier and a paid subscription for full data. For Walmart, the Margenos extension shows the profit math, sellers and price history on Walmart.com itself. Our retail arbitrage guide covers how both styles work.

Listing and crosslisting apps

Crosslisting apps let you write one listing and post it to several marketplaces, then delist everywhere when it sells. They're made for one-of-a-kind items like clothing, shoes and collectibles.

• Vendoo posts to 10+ marketplaces, including eBay, Poshmark, Mercari, Depop and Etsy. Plans start at $14.99 a month with a 14-day trial.
• List Perfectly is a long-running crosslister with an AI listing assistant.
• Crosslist uses one universal form and has a full mobile app.

None of these list Walmart Marketplace as a supported channel. On Walmart, you usually match an existing listing by UPC in Seller Center or the Walmart Seller app.

Inventory and profit tracking apps

A reseller tracking app records what you paid, where each item is, what it sold for and your expenses, so you know your real profit at tax time. My Reseller Genie is a subscription bookkeeping tool that pulls sales from multiple platforms. Flippd tracks inventory, expenses and mileage, and lets you start without a credit card. Many sellers start with a spreadsheet, which is free and works fine until you have a few hundred items.

Free vs paid reseller apps

Free reseller apps exist, but they usually come with limits: a set number of scans, less data, or they only work if you're already a registered seller. Amazon's Seller app is free for Amazon sellers. Keepa and Scan Profit have free tiers. Most serious sourcing tools are paid because they pay for marketplace data every time you scan. A good test: if one avoided bad buy a month would cover the subscription, the paid app is worth it.

How to choose your reseller app

1. Start with your marketplace. Walmart, Amazon and eBay each need different fee math. Read Walmart vs Amazon if you're still deciding.
2. Match the app to how you source. A phone scanner for stores, a browser extension for online deals.
3. Check the numbers it shows. Profit after all fees, sales speed and competing sellers matter more than a pretty interface.
4. Use the free trial on real products. Scan items you already know the answer to and see if the numbers line up.

Sources: SellerAmp pricing · InventoryLab pricing · Scan Profit (App Store) · Profit Bandit (App Store) · Vendoo pricing · Tactical Arbitrage · Jungle Scout scanner app review. Checked October 2026. Prices and features change; confirm on each app's site.