Helium 10 vs MerchantWords (2026): which should you pick?

Pick Helium 10 if

• Fits if you're launching private label products and want research and profits in one account
• Works for sellers branching out from Amazon to Walmart or TikTok Shop

Look elsewhere if

• Pricey if you want ads automation or profit and loss reports, which start on Diamond at $279
• Skip it if all you need is a profit dashboard, as sellerboard starts at $15
• Tight if you're on Platinum: 20 tracked ASINs, 40 SKUs, and a forced move to Diamond past $100K a year in sales
• Watch out: Helium 10 Ads takes 2% of managed ad spend, and the refund service keeps 15% on Platinum
• Watch out: add-ons cost extra, with tracked keywords from $19 a month, MCP from $50 and Market Tracker 360 from $650

Pick MerchantWords if

• Fits if you write Amazon listings and want the phrases shoppers type there
• Works for checking which keywords put a rival's product on Amazon's first page

Look elsewhere if

• Not for you if you want to try before paying, as there's no free plan or trial
• Skip it if you sell on Walmart, eBay or Etsy too, as that data is only a custom report on request
• Tight if you sell in several countries, as Silver covers one; regional data needs Gold at $79
• Watch out: the whole database refreshes every 3 to 4 weeks, so figures can lag
• Pricey if you need every marketplace, at $149 a month for Platinum, or $749 for a team of up to 20

Helium 10

• Plans are set by yearly sales: Platinum to $100K, Diamond to $10M, Enterprise beyond that.
• Helium 10 Ads, the AI agent, profit and loss reports and most of the tracked-ASIN allowance come only with Diamond.
• Helium 10 Ads takes 2% of managed ad spend; the refund service keeps 15% on Platinum and 10% on Diamond.
• Add-ons cost extra: more tracked keywords from $19 a month, MCP from $50 and Market Tracker 360 from $650.

MerchantWords

• There is no free plan, and the help center says there is no free trial.
• Silver covers one country only; regional and global data need Gold or Platinum.
• The data is from Amazon only; Walmart, eBay or Etsy data is offered as a custom report on request.
• Search data is collected daily but the whole database is refreshed every 3 to 4 weeks.

Helium 10

Product research

Black Box finds product ideas by demand and competition, and Xray and the Chrome extension show sales estimates while you browse Amazon or Walmart.

Keyword research and tracking

Cerebro looks up the keywords a competitor's ASIN ranks for, Magnet suggests keywords from a seed phrase, and Keyword Tracker follows rankings over time.

AI listing builder

Writes and scores product listings from your keyword research, and can convert Amazon listings to TikTok Shop in bulk.

Profits and inventory

Tracks profit and product analytics, forecasts inventory, raises supplier orders and sends stock to Amazon; Diamond adds profit and loss reports.

Ads automation

Diamond includes rules-based Amazon ad automation, dayparting and bid suggestions, with a 2% fee on ad spend managed through Helium 10 Ads.

Helium AI agent and MCP

On Diamond, an AI agent answers questions across keywords, listings, ads and operations, and the Helium 10 MCP lets other AI tools query your data.

MerchantWords

Classic Search

Look up a keyword to see phrases that contain it, with estimated Amazon search volume and seasonality, and save them to collections.

Keyword Multiplier and Explorer

Keyword Multiplier generates related and complementary keywords from a search; Keyword Explorer is where research is reviewed and edited.

ASIN Plus

A reverse ASIN lookup that shows which keywords put your product, or a competitor's, on the first page of Amazon results.

Page 1 Products

Shows the top-ranking products for any keyword on the first page of Amazon search, with figures on how crowded the market is.

Emerging Trends and history

Emerging Trends lists searches that are new on Amazon, and a history panel charts when a keyword's searches rise and fall.

Bulk Search and Product Tracker

Search many keywords or ASINs at once, and track a product's keyword rankings every day.

Helium 10

• Free$0

  A look inside the account with limited uses of each tool and of the Chrome extension, for one user.

• Platinum$99

  per month, billed annually ($129 billed monthly)

  For up to $100K a year in sales: product and keyword research (100 reverse-ASIN searches a month), 20 tracked ASINs, 40 inventory SKUs, 2 seller accounts.

• Diamond$279

  per month, billed annually ($359 billed monthly)

  For $100K to $10M a year: adds the Helium AI agent, ad automation, 1,000 tracked ASINs, 500 SKUs, profit and loss reports, 5 users and 10 accounts.

• Enterprise$1,499

  per month and up, billed annually

  Beyond $10M a year: 10+ users, 15+ seller accounts, up to 5,000 ASINs, a customer success manager and coaching. Booked through a demo.

MerchantWords

• Silver$35

  per month for 500 searches, billed monthly

  One country's Amazon data and 10 keyword collections, for new sellers. Keyword Multiplier and Emerging Trends are not included.

• Gold$79

  per month for 1,000 searches, billed monthly

  Data for one region, such as North America, 100 keyword collections, and Keyword Multiplier and Emerging Trends.

• Platinum$149

  per month for unlimited searches, billed monthly

  Global data across every marketplace covered and 1,000 keyword collections, for brands, investors and teams.

• Enterprise$749

  per month for unlimited searches, billed monthly

  Up to 20 users, 10,000 collections and every feature, for large teams and agencies. Set up by contacting sales.

Helium 10

• Annual discount

  Save up to 20% with annual billing

  Billed yearly, Platinum is $99 a month instead of $129 (saving $360 a year) and Diamond $279 instead of $359 (saving $960).

MerchantWords

• Annual discount

  Two months free with annual billing

  MerchantWords' help center says an annual subscription gives two months free, for example $790 a year for Gold and $1,490 for Platinum.