Amazon Keyword Research Tools Compared: Search Volume, Rank, and Sales Estimates

"Keyword research tool" covers four different jobs on Amazon, and most tools do only some of them. Before comparing prices, decide which numbers you need:

• Amazon search volume estimates. How often shoppers type a term into Amazon's search bar. Amazon does not publish this, so every tool estimates it from its own data, and estimates differ between tools.
• Google search volume. How often people search a term on Google. Useful for content and ads, but it is a different population from Amazon shoppers.
• Keyword rank. Where a specific ASIN appears in Amazon's results for a term. This is observable, not estimated: run the search and count.
• Sales estimates. How many units a listing sells. Also estimated, usually from Best Sellers Rank, and the method varies by tool.

Rank and sales are often confused. A product can rank first for a keyword that nobody searches, and a best seller can rank nowhere for the term you care about. You need both to judge a keyword.

How we checked

Pricing and feature names below were read from each vendor's official pricing page on November 7, 2026. Where a page could not be loaded or did not state a figure, the table says so rather than guessing. Canopy's capabilities come from its API documentation and the code behind its free tools. Prices change often, and most vendors show lower numbers when billed annually, so confirm on the vendor's page before buying.

Quick comparison

Two things stand out. The seller suites (Helium 10, Jungle Scout, AMZScout, SellerApp) are the only tools that estimate Amazon search volume and bundle rank tracking with sales estimates in one dashboard. Ahrefs and Semrush are web SEO products; Ahrefs adds an Amazon search engine mode, Semrush does not. Canopy is not a research dashboard at all. It is an API for developers who want to build their own tracking or analysis on live Amazon data.

Pro vs. Amateur Amazon Keyword Research (Step by Step)

1. Helium 10

Helium 10 is the broadest seller suite here. Its pricing page names Cerebro for reverse-ASIN keyword discovery, Magnet for finding keywords for a listing, and Keyword Tracker for rank monitoring, along with keyword sales estimates and a reverse ASIN lookup. When we checked, the Platinum plan was $129 per month billed monthly, or $99 per month billed yearly, and a free plan with limited access was available. Keyword Tracker is also sold as an add-on starting at $19 per month, and an MCP add-on starts at $50 per month. The pricing page does not state whether API access is included.

Best for: sellers who want keyword discovery, rank tracking, and listing tools in one subscription.

2. Jungle Scout

Jungle Scout is best known for product research and sales estimates, with keyword trends, search term trends, and keyword harvesting listed on its pricing page. Plan prices sit on a separate Catalyst pricing page that we did not retrieve, so the table leaves them blank. The page states there is no free trial and offers a 7-day money-back guarantee on standard plans. A Jungle Scout API exists; whether it is included in a plan or priced separately is not stated on the pricing page.

Best for: product validation and market sizing, with keyword research alongside.

3. AMZScout

AMZScout offers a Chrome extension and a web app for product and keyword research with sales estimates. Its pricing page returned no content when we checked on November 7, 2026, so we are not quoting a price or trial terms. Check the vendor's site directly.

Best for: sellers who prefer researching inside Amazon's own pages with an extension.

4. SellerApp

SellerApp lists a Keyword Explorer for finding keywords and a Keyword Ranking Tracker, with keyword tracking included in the Pro plan. When we checked, the Freemium plan was $0 with no credit card required and described as a forever-free plan, and the Pro plan started at $99 per month, with a discount for annual billing. The site also advertises APIs for e-commerce businesses, though API pricing is not stated on the pricing page.

Best for: sellers who want PPC and keyword tracking together and a free plan to start on.

5. Ahrefs

Ahrefs is a web SEO suite whose Keywords Explorer can switch its search engine to Amazon, giving search volume estimates for Amazon queries alongside Google. It does not track Amazon rank or estimate Amazon sales. When we checked, the Starter plan was $29 per month, Lite was $129 per month, and an Ahrefs Free plan was available. API and MCP access are listed on Lite and above.

Best for: teams that already run Google SEO and want Amazon keyword volume in the same tool.

6. Semrush

Semrush's Keyword Magic Tool is a Google keyword database. It is useful for content and paid search around a product, but it does not report Amazon search volume, Amazon rank, or sales estimates. When we checked, the SEO plan was $139 per month billed monthly or $117.33 per month billed annually, with a free plan and a 7-day trial on the paid plan.

Best for: Google-side keyword research for product content, not for Amazon listing optimization.

7. Canopy API

Canopy API is different in kind from the tools above. It is a REST and GraphQL API for live Amazon data, aimed at developers who want to build their own tracking or analysis rather than use a dashboard.

What it does for keyword work:

• The Amazon search API returns the listings on a results page for a search term, in the order shoppers see them, with a sponsored flag on each row and a domain parameter for 17 marketplaces. Computing an ASIN's organic position from that is a short loop; the rank tracking guide walks through it, and the free keyword rank checker runs the same logic for one keyword and one ASIN.
• The Amazon product API returns the listing behind an ASIN: title, bullets, price, images, rating.
• The Amazon sales data API returns estimated unit sales for an ASIN.

What it does not do: it does not estimate Amazon or Google search volume, it does not store rank history for you, and it has no dashboard. Pricing is usage-based: 100 free requests every month, then $0.01 per request with automatic volume discounts. There is no monthly minimum.

Best for: developers and data teams building custom rank tracking, repricing, or research pipelines.

Which one should you pick?

• You sell on Amazon and want one login for keywords, rank, and sales: Helium 10, Jungle Scout, SellerApp, or AMZScout. Compare the entry plans on their own pages, since prices and what counts as a "keyword" differ.
• You already pay for Ahrefs: try its Amazon search engine mode before buying a seller suite for volume alone.
• You need Google keyword data for content around your products: Semrush or Ahrefs.
• You are building software or a spreadsheet pipeline: Canopy API, with your own schedule and storage. Start with the 100 free requests.

FAQs

Is Amazon search volume the same as Google search volume?

No. Amazon volume counts searches in Amazon's search bar; Google volume counts searches on Google. Amazon does not publish its numbers, so every Amazon figure is an estimate from the tool showing it, and two tools can disagree. Google figures also come from estimates, but from a different population of searchers.

What is the difference between keyword rank and a sales estimate?

Rank is where one listing appears for one search term. It can be observed directly by running the search. A sales estimate is a model's guess at units sold, usually derived from Best Sellers Rank. A listing can rank well for a term that drives few sales, or sell well through terms you are not tracking.

Does Canopy API provide keyword search volume?

No. Canopy returns live search results, product data, and sales estimates. It does not estimate how often a term is searched.

Which tools have a free plan?

As of November 7, 2026, Helium 10, SellerApp, Ahrefs, and Semrush showed free plans on their pricing pages, and Canopy API includes 100 free requests a month. Jungle Scout states it does not offer a free trial. AMZScout's pricing page could not be loaded, so we did not verify it.

Can I track Amazon keyword rank for free?

For a single keyword and ASIN on amazon.com, yes, with the free keyword rank checker. For many keywords over time, the seller suites include rank trackers in paid plans, or you can build your own with the Canopy search API as described in the rank tracking guide.