Helium 10 vs MerchantWords
Helium 10
helium10.comMerchantWords
merchantwords.comSide by side
| Figure | Helium 10 | MerchantWords |
|---|---|---|
| Price from | $8.25/mo | $35/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | — | Yes |
| Plans published | 7 | 8 |
| Spec score · Amazon Seller Tools | 8.4 (#2) | 8.1 (#4) |
| Spec score · Keyword Research Tools | 8.4 (#8) | 7.9 (#22) |
| Company history | Helium 10 says it was founded in 2015 by e-commerce operators. | MerchantWords says it was founded in 2012 by George Lawrence to help Amazon sellers discover and rank for relevant keywords. |
| Founded | 2015 | 2012 |
| Privacy | Pixel Labs, LLC, doing business as Helium10, states that it owns and operates the Helium10 platform and services. | MerchantWords says it does not sell personal data and says full credit card numbers are handled exclusively by Stripe and never stored on its servers. |
| Support | The site offers a support request form, knowledge base, account and billing help, and an assistance link. | The product pages advertise 24/7 customer support, while the API Starter plan includes email support and the Pro API plan includes priority support. |
Plans
Helium 10
- FreeFree
- Platinum$129 a month
- Diamond$359 a month
- Enterprise$1,499 a month
- Platinum$99 a year
- Diamond$279 a year
- Enterprise$1,499 a year
MerchantWords
- Demo (API)Free
- Silver$35 a month
- Gold$79 a month
- Starter (API)$79 a month
- Platinum$149 a month
- Pro (API)$499 a month
- Enterprise$749 a month
- Enterprise (API)$1,499 a month
In their own words
Helium 10
Helium 10 brings product and keyword research, advertising, listing optimization, analytics, and operations tools together for e-commerce sellers. Its stated marketplace coverage includes Amazon, TikTok Shop, Walmart, and more than 24 marketplaces. The Chrome extension analyzes Amazon and Walmart product data such as sales figures, estimated FBA fees, reviews, active sellers, fulfillment method, and Best Seller Rank. Seller account connections include Amazon, Walmart, and TikTok, though an account can connect to only one Helium 10 account at a time. The iOS and Android app includes Profits, Ads, Alerts, blogs, and podcasts; its Ads controls are limited, and marketplace token connections must be set up on the web. Plans include a free tier with limited tools and two tokens. Paid plans start at $99/mo (annual); listed options include Platinum at $129 a month and Diamond at $359 a month, both billed monthly. Diamond includes Helium 10 Ads features and a 2% managed spend fee.
MerchantWords
MerchantWords provides Amazon keyword research, search-volume estimates, competitive analysis, and related e-commerce optimization tools. Classic Search shows estimated monthly volume, 12-month seasonality, related terms, and keyword depth and strength across Amazon marketplaces. ASIN Plus finds keywords a product ranks for when given its ASIN, while Product Tracker follows Amazon keyword rankings daily. Other tools include Collections, Emerging Trends, Keyword Explorer, Keyword Multiplier, Page 1 Products, and Bulk Search. MerchantWords says its keyword data comes from Amazon’s autocomplete search bar, and describes its volume and keyword figures as estimates without guaranteeing absolute accuracy. Collections can be exported as CSV files for listings and ad campaigns. Data is available through REST and MCP; the MCP page lists Claude Desktop, Claude Code, Cursor, VS Code Copilot, and compatible agent frameworks. A free API demo provides real data for a fixed set of terms without an account. Paid plans start at $35/mo. The Silver plan includes 500 searches, while Gold includes 1,000; Platinum and Enterprise list unlimited searches.