Short answer: The SellerApp Chrome extension overlays seven feature panels on Amazon search results and product pages — Product Analyzer, Product Intelligence, Product Keywords, Keyword Tracking, Profit Calculator, Listing Quality, and Review Extractor — and it is free to install, but it will not run until you create a SellerApp account first. Where free stops is the part nobody publishes: SellerApp’s help center states plainly that an account is required and that the account is free, and its pricing page shows a $0 Freemium tier, but no page on sellerapp.com states a lookup quota, a search limit, or a feature cut-off for the extension (checked 2026-08-19).
This page covers the extension only — the panels it draws, the marketplaces its code actually targets, the permissions it requests, and where the free line is and is not drawn. For plan prices, the eight-dimension scorecard, and what dated reviewers said, see our SellerApp review ; if you have already decided to leave, SellerApp alternatives sorts the replacements by reason.
What the SellerApp Chrome Extension Puts on an Amazon Page
The extension has two entry points, and they show different things.
On a search results page, the Product Analyzer panel tabulates every product in the SERP. Per the Chrome Web Store listing description (checked 2026-08-19), the columns are:
| Group | Fields shown |
|---|---|
| Identity | ASIN, Product Name, Parent ASIN, Brand, Category |
| Demand and rank | BSR, Est. Daily Orders, Est. Daily Revenue, Est. Monthly Orders |
| Price and offer | Price, Listing Price, Buybox |
| Social proof | Ratings, No. of Rating, Reviews |
| Listing signals | Images, Listing Health |
| SellerApp’s own score | Opportunity Score |
Below the table it adds Average Prices, Average Orders, Average Ratings, and what the listing calls “the Market OS(Market Opportunity Score)” for the result set as a whole. Two of those columns are SellerApp’s own composite scores rather than Amazon data — Opportunity Score and Listing Health are modelled numbers, and the store listing does not publish the formula behind either.
On a single product page, Product Intelligence takes over. The left rail repeats Opportunity Score, BSR, category, brand, estimated orders per day and estimated revenue per day; the right side holds the tabs that do the actual work:
- Trends — Offers, Price, Rank, Revenue and Orders plotted over time, which is how you spot seasonality before committing to a buy.
- Product Keywords — the keywords associated with that listing, each with a Relevance Score, Search Volume and CPC.
- Keyword Tracking — for keywords you already track: number of indexed products, page rank, current position, and position change over a timeframe.
- Profit Calculator — available for both FBA and FBM. You enter Sales Price, cost of goods sold, FBA cost, shipping cost and other costs; it returns approximate Net Profit, Net Margin and ROI.
- Listing Quality — a weighted score built from two factors the listing names explicitly, Discoverability and Desirability, with a breakdown under each.
- Review Extractor — scans the reviews on the listing and lets you download them for analysis elsewhere.
One naming inconsistency worth knowing before you go looking for a menu item: SellerApp’s help center guide describes the same three areas as Product Insights, Product Scanner and Product Intelligence, and lists an LQI tab where the store listing says Listing Quality (both checked 2026-08-19). Same panels, two vocabularies.
Where “Free” Stops (Checked 2026-08-19)
This is the question the extension’s own marketing does not answer, so here is exactly what each official page does and does not say.
The install is free, but the account is mandatory. SellerApp’s help center states it in one line: “You need a SellerApp Account to use the chrome extension. Don’t worry. It’s free.” The store listing spells out the order of operations — register at dashboard.sellerapp.com first, install second, then sign in inside the extension. There is no anonymous or guest mode.
The account tier that backs it is Freemium. SellerApp’s pricing page shows a plan named “FREEMIUM” at “$0” with the note “No Credit Card required”, described as being for sellers just getting started, covering “Basic functionalities including Product Research and Overview”. Above it sit a Pro plan starting at $99 per month and a Smart plan with Automation starting at $149 per month (regular $250, with the discount stated as applying to the first three months). Those are the plan-level facts; the full breakdown lives in our SellerApp review .
No published number marks the boundary. The pricing table carries no row that names the Chrome extension, no cap on lookups, keyword pulls or review exports, and no statement that any specific extension tab is Pro-only. The product page repeats “free Chrome extension” without qualifying it. So the honest description of the free tier is: undisclosed, not unlimited. Treat any third-party article that quotes a specific free quota for this extension as unsourced until SellerApp publishes one.
Two checks beat guessing: register the free account and read the tier limits inside the dashboard, and note which panel first refuses to load data. That, not the pricing page, is where the real line sits.
Which Amazon Marketplaces It Actually Covers
SellerApp’s product page names 16 marketplaces (checked 2026-08-19): “The US, the UK, Canada, Australia, Mexico, Spain, Italy, France, Germany, the Netherlands, Saudi Arabia, Japan, Singapore, Brazil, the UAE, and the Indian Amazon marketplaces.”
The extension’s manifest tells a slightly different story, and you can read it yourself: the Chrome Web Store detail page embeds the published manifest in its page source, so a view-source and a search for host_permissions shows what the code is registered against. As of version 4.0.8 (checked 2026-08-19), the manifest requests host access to 23 Amazon domains, while the static content-script registration — the part that injects the on-page overlay automatically — lists 13.
| Coverage group | Marketplaces | Count |
|---|---|---|
| Named on the product page and in the static content-script list | US, UK, Canada, Australia, Mexico, Spain, Italy, France, Germany, Saudi Arabia, Japan, India, UAE | 13 |
Named on the product page but present only in host_permissions | Netherlands, Singapore, Brazil | 3 |
In host_permissions but not named on the product page | Sweden, Poland, Belgium, Ireland, Turkey, Egypt, South Africa | 7 |
That table cuts both ways. A Manifest V3 extension can inject scripts on demand into any domain it holds host access for, so the middle row is not proven dead — it simply lacks the automatic-injection guarantee the top 13 have. The bottom row is the more interesting half: seven European, Middle Eastern and African marketplaces the marketing copy never mentions sit inside the permission set.
Practical rule: if you sell on the Netherlands, Singapore or Brazil marketplace, verify the overlay actually renders on a live listing before you pay for anything upstream of it. If you sell on the 13 in the top row, coverage is documented in both places.
What It Asks For: Permissions, Sign-In and Data
The same published manifest answers the permission question, which most extension roundups skip entirely.
- API permissions requested:
storage,unlimitedStorage,identity, plus one host entry written ashttps://cdn/sellerapp.com/**— a malformed pattern that appears intended for its CDN. - Non-Amazon host access:
dashboard.sellerapp.comandhttp://localhost:4200/*. The second is a development-server address left in the shipped manifest; it grants nothing on the public web. - Sign-in scope: the manifest declares Google OAuth with the scopes
userinfo.profileanduserinfo.email, so signing in with Google hands over your basic profile and email address, not your Amazon account. - What is not requested: no
tabs, nocookies, nowebRequest, nohistory, and no<all_urls>. The extension is scoped to Amazon domains plus SellerApp’s own dashboard; it is not positioned to read arbitrary browsing.
Separately, the Chrome Web Store listing’s privacy section declares that the extension handles location, user activity and website content, with developer declarations that data is not sold to third parties outside the approved use cases, is not used for purposes unrelated to core functionality, and is not used for creditworthiness or lending.
For scale and freshness, the store listing shows version 4.0.8, last updated August 14, 2026, 20,000 users, and 4.6 out of 5 from 257 ratings (checked 2026-08-19). Worth noting against our own record: when we checked the same listing on 2026-07-30 for the SellerApp review , it showed 30,000 users and a July 18, 2026 update date. The update cadence is healthy; the user count moved down a bucket between the two checks.
Extension or Web Platform: Where Each Job Ends
Three common workflows, and the point at which the browser stops being enough.
Product research ends in the extension for most of its length. Screening a SERP, checking a single ASIN’s rank and revenue estimates, reading the trend curve and running the profit maths all happen on the Amazon page. You leave only to save, share or compare results across sessions.
Keyword work is split. Pulling a listing’s keywords with volume, relevance and CPC works in the panel, and Keyword Tracking will show positions for terms you already track — but the tracking list itself is an account-side object, so the setup and the history live in the SellerApp dashboard. Compare that with a dedicated rank tracker in our Amazon keyword tracker guide if rank history is the main job.
Advertising does not happen in the extension at all. The Advertising Overview, PPC Insights, Campaign Manager and Ads Automation features appear on SellerApp’s pricing page as platform capabilities; none of them appear in the extension’s manifest or store description. If PPC is why you are evaluating SellerApp, the extension is not the product you are evaluating.
One more scoping note: SellerApp’s product page carries a section headed “How the Extensions Work Together”, and a Chrome Web Store search for SellerApp
returns more than one listing from the publisher (checked 2026-08-19). Everything on this page describes the listing titled “SellerApp: Supercharge your Amazon Sales” (extension ID lofbbfcpljahnhgncgommcbkckdbjdof). Features named on the product page but absent from that listing’s description — a review request tool, an index checker, Brand Analytics export — belong to the wider toolkit, so confirm which listing carries the feature you want before installing.
How to Compare It With Other Amazon Page Extensions
Four questions separate page-overlay extensions, and price is not the first of them.
| Question | SellerApp extension (checked 2026-08-19) | Why it decides things |
|---|---|---|
| Can you use it without an account? | No — a free SellerApp account is required | Determines whether you can evaluate it in five minutes |
| Is the free boundary published as numbers? | No quota or feature cut-off stated on any official page | Undisclosed limits make a workflow un-plannable |
| How many marketplaces does the code target? | 23 in host permissions, 13 in the static injection list | Marketing counts and manifest counts can differ |
| What data does it handle? | Location, user activity, website content (store disclosure) | Governs whether it clears your own policy bar |
Run those four questions across the field and the answers spread out fast. AMZBase , a free overlay that shows ASIN, BSR, lowest FBA offer and FBA seller count on search and detail pages and adds FBA fee and profit estimation, states in its store listing that it requires no registration, no login, and stores settings locally (checked 2026-07-27) — the opposite answer to the first two rows above. ASINCrate , which handles the media side rather than research, publishes its boundary as an explicit table: a Guest tier with no account for single-image download and variant browsing, a free account adding three video downloads per month, and bulk ZIP and CSV export reserved for a $9.99 per month Pro tier (checked 2026-07-27). Neither is a substitute for SellerApp’s research panels; both illustrate that publishing the free line is a choice, not a technical limitation.
For a broader field, our Amazon Chrome extensions roundup and nine Chrome extensions for FBA sellers cover the wider set, and AMZBase’s guide to seller Chrome extensions approaches the same field from an operations angle.
Bottom Line
The SellerApp Chrome extension is a research overlay with unusually good breadth for a free install: SERP-wide tables with revenue estimates, per-ASIN trend and keyword data, an FBA and FBM profit calculator, and a review exporter, on a codebase updated within a week of our check. Its two caveats are structural rather than technical: you cannot try it anonymously, and no official page states where free stops, so treat the free tier as an unknown quantity to verify inside the dashboard. If both are acceptable, confirm your marketplace sits in the top row of the table above before building anything on it.
Frequently Asked Questions
Is the SellerApp Chrome extension free? The install is free and the store listing is free, and SellerApp’s help center states the required account is also free (checked 2026-08-19). What is not free-and-documented is the usage allowance: no official SellerApp page publishes a lookup quota or feature cut-off for the extension.
Do you need a SellerApp account to use it? Yes. SellerApp’s help center states, “You need a SellerApp Account to use the chrome extension. Don’t worry. It’s free.” The store listing describes registering at dashboard.sellerapp.com before installing, then signing in inside the extension.
Which Amazon marketplaces does the SellerApp Chrome extension cover? The product page names 16. The published manifest for version 4.0.8 requests host access to 23 Amazon domains and registers automatic content-script injection on 13 of them (checked 2026-08-19). The 13 with both are US, UK, Canada, Australia, Mexico, Spain, Italy, France, Germany, Saudi Arabia, Japan, India and UAE.
What data does the extension read?
Its manifest scopes it to Amazon domains plus SellerApp’s own dashboard, and it does not request tabs, cookies, webRequest or history access. The Chrome Web Store privacy section declares that it handles location, user activity and website content, with the developer declaring the data is not sold to third parties outside approved use cases.
Disclosure: This page contains no affiliate links; SellerApp, AMZBase and ASINCrate are linked without any affiliate tracking, and amzfinder does not accept paid placement or sponsored reviews. SellerApp’s feature list, marketplace coverage, manifest, plan prices and store statistics were checked 2026-08-19 against its official product page, help center, pricing page and Chrome Web Store listing; AMZBase and ASINCrate details were checked 2026-07-27 against their own pages. This assessment is based on public documentation, not a hands-on benchmark or a paid account. Last updated: August 2026.