If you only want one Amazon seller tool, buy Helium 10. It is the single platform here that handles product research, keyword research, listing work, advertising and profit tracking well enough that you can run a business on it alone. Platinum costs $99 a month billed yearly, or $129 month-to-month — checked against Helium 10’s own pricing page on 2 August 2026.

Platinum from $99/month billed yearly — our one-tool pick

That is the honest answer in the singular. It is not the answer to every version of the question, because three jobs are done better elsewhere:

Profit tracking — Sellerboard starts at $19 a month and tells you what you actually earned, not what a suite estimates you earned.
Market and seller intelligence — SmartScout maps brands, sellers and categories in a way Helium 10 does not attempt.
Listing optimization — Data Dive goes deeper on keyword clustering than any bundled listing builder.

Below are nine tools for Amazon sellers, sorted by the job you are trying to finish. Every price was checked against the vendor’s own pricing page on 2 August 2026.

Amazon seller tools compared

Tool	Best for	Entry price (2 Aug 2026)	Why pick it
Helium 10	The all-in-one default	$99/mo Platinum billed yearly ($129 monthly)	Research, keywords, listings, ads and profit in one login
SmartScout	Market, brand and seller intelligence	$29/mo Basic ($25 yearly)	Starts from the market rather than from a product
Jungle Scout	Beginner-friendly product research	$29/mo Starter ($348/year)	The gentlest learning curve of the big suites
Data Dive	Serious listing optimization	$39/mo Starter ($32/mo yearly)	Keyword clustering built around listing decisions
Sellerboard	Profit and cash-flow truth	$19/mo Standard ($15/mo yearly)	Real net margin after FBA fees, PPC, returns and storage
SellerSprite	Keyword research on a budget	$39/mo Basic ($390/year)	Suite-grade keyword depth below suite pricing
MerchantWords	Raw search-term volume at scale	$35/mo Silver	A keyword database, not a workflow
Teikametrics	PPC for larger ad accounts	$149/mo Essentials billed annually ($179 monthly)	Built for accounts spending real money on ads
Keepa	Price and Buy Box history	Free extension, paid data tier	The reference for historical pricing on any ASIN

Best all-in-one Amazon seller tool: Helium 10

Helium 10 earns the top slot for one unglamorous reason: breadth. Its published toolset covers product research (Black Box, Xray, Product Launchpad), keyword research (Cerebro, Magnet, Keyword Tracker), listing optimization (Scribbles, Listing Builder, Listing Analyzer, Keyword Processor), daily operations (Inventory Management, Refund Genie, Alerts, Follow Up, Seller Assistant), analytics (Profits, Market Tracker, Search Query Analyzer) and advertising (Helium 10 Ads).

Nothing in that list is best-in-class. All of it is good enough, and it is all in one place. For a seller doing everything themselves, that matters more than any single tool being marginally sharper.

The tier structure is now Free, Platinum, Diamond and Enterprise — Helium 10 tags them by revenue band: Platinum for “$0–$100K in yearly sales”, Diamond for “$100K–$10M”, Enterprise “beyond $10M”. Platinum is $99 a month on yearly billing and $129 month-to-month. Diamond is $279 yearly and $359 monthly. Enterprise starts at $1,499 a month billed annually. Yearly billing saves up to 20%.

One correction worth stating plainly, because a great many pages including some older ones on this site still get it wrong: there is no longer a Helium 10 Starter plan. If you see a $29 or $39 Helium 10 entry price quoted anywhere, it is stale. The cheapest paid plan is Platinum.

Who should skip it: anyone whose only real problem is knowing their margin — you are paying $99 a month for a research suite to solve a $19 problem. Also skip it if you have already committed to a specialist PPC stack and a separate profit tracker — you would be paying twice for the same functions.

Best for product research: Jungle Scout

Jungle Scout remains the softest landing in product research. Its Catalyst plans are Starter at $29 a month or $348 a year, Growth Accelerator at $49 or $588, and Brand Owner + CI at $129 or $1,548. Extra seats on the upper two plans are $49 a month. Cobalt, the enterprise product for brands above $1M, is quoted per account.

The Product Database, Opportunity Finder and Keyword Scout are more opinionated than Helium 10’s equivalents. They funnel you toward a decision rather than handing you a spreadsheet. For a first-time seller that is a feature, not a limitation.

New customers on regularly priced plans get a 7-day money-back guarantee, with promotions and trials excluded.

Who should skip it: experienced sellers. Once you know what you are looking for, the guardrails become friction, and Helium 10’s Black Box gives you more filtering control for a similar spend. Skip it too if the plan you can afford is Starter but the feature you came for sits on Brand Owner — check the tier before you buy, not after. Our full breakdown of the field is in best Amazon product research tools.

Best for keyword research: Helium 10, with two cheaper specialists

Keyword research is the one job where the all-in-one genuinely is best-in-class. Cerebro does reverse-ASIN lookups better than anything at its price, and Magnet handles the discovery side.

If you do not want a full suite, two specialists are worth knowing:

SellerSprite — Basic $39 a month or $390 a year, rising through Standard $79, Advanced $129 and VIP $189. Annual billing saves 16%. There is a three-day trial. It gives you close to suite-grade keyword depth for well under suite pricing.
MerchantWords — Silver $35 a month, Gold $79, Platinum $149, Enterprise $749. It is a search-term database rather than a workflow: enormous term coverage, very little help deciding what to do with it.

SmartScout’s keyword layer, Rank Maker, starts at the Essentials tier ($97 a month). Worth knowing: SmartScout’s own Rank Maker page says it is “included in every SmartScout plan”, while their pricing comparison table marks it unavailable on Basic. The pricing table is the one that governs your invoice.

Who should skip the specialists: anyone already paying for Helium 10 or Jungle Scout. You would be buying a second keyword tool to solve a problem your first one already handles. The full comparison is in best Amazon keyword research tools.

Best Amazon listing tool: Data Dive

“Amazon listing tool” is a distinct search for a reason. Writing a listing and researching a product are different jobs, and the tools that do them well are different tools.

Data Dive is the strongest of them. Starter is $39 a month, or $32 a month on yearly billing ($384 a year). Standard is $149 monthly, $124 yearly ($1,488). Enterprise is $490 monthly, $408 yearly ($4,896). The jump from Starter to Standard is steep, and Starter is deliberately described by Data Dive as being for light research — check that the volume you need sits inside it.

What makes Data Dive different is that it clusters keywords by how they actually behave across a competitive set, rather than listing them by volume. When you are deciding what goes in a title, what goes in bullets and what gets left for the backend, that clustering is the whole game.

The alternatives, honestly stated:

Helium 10 bundles Scribbles, Listing Builder, Listing Analyzer, Keyword Processor and Product Listing Converter into Platinum. Not as sharp as Data Dive, but included in something you may already be paying for.
SmartScout offers AI Listing Architect — “create listings with the right keywords and the right message in only a few short minutes” — and an AI Scorecard that returns a discoverability and conversion score with recommendations. Both sit from Essentials, $97 a month.

Who should skip Data Dive: sellers with fewer than about five listings. The tool is built for people who optimize repeatedly and at volume; if you write a listing twice a year, Helium 10’s bundled builder is enough. More options in best Amazon listing optimization tools.

Best for profit and analytics: Sellerboard

Every research suite shows you an estimated margin. Estimates are calculated from public data. Your actual margin lives in your settlement reports, and the gap between the two is where businesses quietly lose money.

Sellerboard closes that gap. Standard is $19 a month, or $15 a month billed annually ($179 a year). Professional is $29 ($23, $279), Business $39 ($31, $369), Enterprise $79 ($63, $759). It offers a full month free with no credit card required.

It nets out FBA fees, storage, PPC spend, returns, promotions and cost of goods, then shows real profit per product per day. It also handles reimbursement tracking, which for most sellers finds money that was already theirs.

Who should skip it: pre-launch sellers with no sales history — there is nothing to reconcile yet. Also skip it if you are already on Helium 10 Diamond and your product count is small enough that Profits covers you. The wider field is in best Amazon seller analytics tools.

For advertising specifically, Teikametrics is the serious option: Essentials is $149 a month billed annually or $179 monthly, covering up to $10K a month in ad spend, with Advanced and Enterprise quoted custom plus 3% of ad spend above $10K. That percentage model means the tool gets more expensive precisely as your ads scale — sensible for accounts above $10K a month, poor value below it.

Best for market intelligence: SmartScout

SmartScout’s own positioning line is the clearest summary anyone has written of this category: “Jungle Scout starts with a product. Helium 10 works around your listing. SmartScout starts with the market.”

That is the actual difference. SmartScout indexes brands, sellers and subcategories rather than individual ASINs — a stated 20M+ products, 1.5M+ sellers and 40,000+ subcategories across 12 marketplaces. Founder Scott Needham is refreshingly blunt about the scope: “We don’t track all 500 million products, but the 30 million that actually generate revenue.” He puts accuracy at 80–90% on most brands and products.

Pricing is Basic $29 a month ($25 yearly), Essentials $97 ($75), Business $187 ($158), Enterprise custom. The tier that matters depends on what you came for: the search-term stack starts at Essentials; Traffic Graph, Brand Reports and Relevancy Quadrant need Business; Share of Voice and Ad Spy are Enterprise-only despite reading like mid-tier features.

Two things to be clear about before you buy. There is no SmartScout free trial — it is a 7-day money-back guarantee with a card required up front. And SmartScout’s Search Query Performance module needs a connected Brand Registry seller account or it populates nothing at all.

Who should skip it: private-label sellers with one or two products in a niche they already understand. Market mapping is a tool for people choosing between markets. If you have already chosen, you are paying for a map of territory you live in. More context in best Amazon market intelligence tools.

Best for reviews and ratings

This is the thinnest category in Amazon software, because Amazon’s rules leave very little room to operate in. Anything promising reviews outside Amazon’s Terms of Service is a liability, not a tool.

The legitimate options:

Amazon’s own “Request a Review” button in Seller Central. Free, compliant, and the baseline everything else automates.
Helium 10 Seller Assistant — described by Helium 10 as request-and-monitor for customer reviews, with Follow Up handling automated email sequences. Included in Platinum.
SmartScout Rating Booster — SmartScout’s description is “turn on Rating Booster and increase your product reviews with fully Amazon-compliant requests on autopilot.”

Who should skip all of it: sellers under roughly 100 orders a month. At that volume you can press the Request a Review button manually in a few minutes a week, and no subscription is worth the difference.

Free and low-cost Amazon seller tools

Plenty of people searching for an Amazon seller tool are not ready to spend $99 a month, and that is a reasonable position. Here is what is genuinely free, stated without the usual asterisks.

Amazon Brand Analytics is the best free tool in this entire article. It is included with Brand Registry at no cost and is the only first-party source of Amazon search data — top search terms, click share and conversion share straight from Amazon. Every paid keyword tool is modelling what this reports directly. Our guide to Amazon Brand Analytics search analytics covers how to read it, and Search Query Performance covers the report most sellers ignore.

SmartScout’s Chrome extension is free with no paid plan required, which makes it the only genuinely free entry point into SmartScout’s data — there is no free SmartScout plan. It shows product and brand research data plus profitability and history charts on Amazon pages. The Chrome Web Store listing shows around 9,000 users and 4.4 stars from 14 ratings, so treat it as a small but well-regarded utility rather than a mass-market product. Details in our SmartScout Chrome extension write-up.

Helium 10’s free tools. Helium 10 does not merchandise a free plan — its pricing page listed Platinum, Diamond and Enterprise only when we checked on 2 August 2026. What it does give away is a set of standalone tools. Their own wording: “Helium 10 provides a number of free tools to sellers, such as our Chrome Extension, an Amazon PPC audit tool, QR code generator, and an Amazon anomaly tracker.” The extension is the substantial one — Helium 10 states in-product that it has over 1.2 million users — and it is enough to check a handful of products, not enough to run a business on. See Helium 10 free tools for what the free route actually gets you.

Keepa’s price history. Keepa’s browser charts of price and Buy Box history are free, and remain the reference for checking whether a product’s price has been stable or repeatedly discounted. Its deeper data features sit behind a paid subscription; Keepa does not publish that pricing in a form we could verify on 2 August 2026, so we quote no figure. See Helium 10 vs Keepa.

Sellerboard’s free month is the most generous paid-tool trial in the category: a full month, no credit card. If you want to know your true margin before spending anything, start there.

The cheapest useful paid combination is Sellerboard Standard ($19) plus SmartScout Basic ($29) — under $50 a month for accurate profit numbers and a working view of your market. It will not do keyword research. It will stop you selling something at a loss, which is the more expensive mistake.

Four stacks that actually work

New seller, first product. Helium 10 Platinum, and nothing else. Resist the urge to assemble a stack before you have a product. Add Sellerboard the month your first units go live. Total: $99, rising to $118.

Wholesale or arbitrage. SmartScout Basic or Essentials, plus Keepa’s free charts, plus Sellerboard. You are buying brand and seller discovery plus price history plus margin truth. Keyword tools are close to irrelevant here — you are not writing listings. Our SmartScout wholesale workflow walks the sourcing process end to end, and best Amazon arbitrage tools covers the sourcing-specific field.

Private label, scaling. Helium 10 Diamond ($279) for the higher Cerebro and Magnet limits, Data Dive Standard for listing work, Sellerboard Professional for profit. Add Teikametrics only once ad spend passes about $10K a month, where its percentage model starts to make sense.

Agency or multi-brand. SmartScout Business ($187) for Brand Reports and Traffic Graph, Helium 10 Diamond for client research, Sellerboard Business or Enterprise for multi-account profit. Watch the seat costs — Jungle Scout charges $49 a month per additional seat, and SmartScout’s seat allowances vary by tier.

How to choose in five minutes

Answer four questions in order and stop at the first yes.

Do you know your real net margin per product? If not, buy a profit tracker first. Everything else is optimizing numbers you cannot see. Sellerboard, $19 a month, free for the first month.
Do you know what you are selling yet? If not, you need research breadth, not depth. Helium 10 Platinum or Jungle Scout Starter. Pick Jungle Scout if you want to be guided, Helium 10 if you want control.
Is your bottleneck the listing rather than the product? Then buy a listing tool, not a suite. Data Dive if you optimize often, Helium 10’s bundled builder if you do not.
Are you choosing between markets rather than products? That is the SmartScout question. Basic at $29 to look around, Essentials at $97 for the search-term stack, Business at $187 for brand and traffic intelligence.

The single most common mistake in this category is buying breadth to solve a depth problem — a $99 suite for a $19 job, or a $187 intelligence platform when what you needed was a better title. Name the bottleneck first. The tool follows from it.

If you are still weighing two specific products, our head-to-heads cover the common pairs: Helium 10 vs Jungle Scout, Helium 10 vs SmartScout, and SmartScout alternatives for the wider field.

Prices verified against each vendor’s published pricing page on 2 August 2026. Where a vendor publishes no figure, we have said so rather than estimate.

Best Amazon Seller Tools in 2026: 9 Picks, Compared by Job