Gridwinner vs SellerAmp
Where SellerAmp checks one ASIN at a time, Gridwinner is the alternative for sellers who need to evaluate a whole list in a single pass.
SellerAmp is a popular single-product analysis tool (a browser extension and mobile app) used to check one ASIN at a time for profitability, Buy Box, and sales rank while sourcing.
| Gridwinner | SellerAmp | |
|---|---|---|
| Primary job | Bulk list analysis (hundreds–100,000 rows) | Single-product (one ASIN) analysis |
| Form factor | Web app you upload a file to | Browser extension + mobile app |
| Where data is processed | Parsed in your browser, so supplier data is never uploaded | Cloud-based |
| True landed cost (incl. VAT) | Yes: across the whole list | Per-product profit calculation |
| Best fit | Vetting wholesale / bulk OA lists | On-the-go single-deal checks |
Where SellerAmp is strong
- Fast single-product deal checks on the fly via browser extension and mobile app
- Convenient for retail-arbitrage scouting and quick in-store or on-page decisions
- Quick Buy Box, ROI, and BSR read-outs per product
Where Gridwinner is strong
- Bulk analysis: rank an entire supplier list or Keepa export in one pass
- The list stays on your machine — nothing is uploaded for analysis
- A true per-unit cost after fees, prep, shipping and VAT, with a letter grade on every line
Which should you choose?
Pick SellerAmp if most of your sourcing is checking individual products on the fly, especially with a phone or browser extension while scouting.
When you've got a whole list to get through, Gridwinner grades every product for real profit at once — privately, without uploading anything.
Frequently asked questions
- What's the difference between Gridwinner and SellerAmp?
- SellerAmp checks one product at a time while you source. Gridwinner takes an entire uploaded list — a wholesale price list or Keepa export — and works through it in a single pass on your own machine.
- Can Gridwinner analyze a single product like SellerAmp?
- Gridwinner is built for lists, but the free no-login calculators (FBA fee, ROI, BSR) handle quick single-product checks. For anything bulk, the full app is the better fit.