SelfPub Go vs BookBeam
Two different jobs, at two different moments. BookBeam is a research and production suite for Amazon self-publishers: it studies the market — other people’s books, other people’s niches — before you commit. SelfPub Go reads your own account after the book is live, putting what your Amazon Ads cost next to what your books earned, per book. Below is where the line falls, with a link to BookBeam’s own page next to every claim we make about it.
Facts checked 21 August 2026. Pages change; if something here is out of date, tell us and we will correct it.
What BookBeam is good at.
Research depth, and a genuinely free way in. BookBeam publishes a free tier, “Chrome Extension Lite,” described as “The free tier of the BookBeam Chrome Extension” with “No Credit Card Required”; it shows Best Sellers Rank, reviews, price and competitors, offers one-click CSV export, and covers 7 Amazon and 2 Audible marketplaces. No card — you can look at the data before deciding anything.
The paid product spans research and production tools BookBeam names itself: Niche Finder, Category History, Trademark Checker, Keyword Research, Reverse Keyword, Category Explorer, Listing Optimizer, Description Formatter, Book Tracker, BookBeam Create, AI Assistant, AI Editor and Opt-In Page Builder. That is a wide surface, and none of it is work SelfPub Go does or intends to do.
It is also straight about where its figures come from, which is rarer in this category than it should be. Its own calculator page explains that sales numbers are modeled: “we have used data from real Amazon book sales and mapped it to Amazon best seller rankings.” Saying that out loud, on the page selling the feature, is the right instinct.
So if the question in front of you is what should I write next, in which niche and category, and how should the listing read, BookBeam answers it and SelfPub Go does not. We are not going to pretend otherwise.
SourceBookBeam — Chrome Extension LiteBookBeam — HomepageBookBeam — Book Sales Calculatorchecked 21 August 2026
Where it stops.
One thing to be honest about first: we have never held a paid BookBeam account. Everything below was read from pages BookBeam publishes, on 21 August 2026. Where a published page does not mention something, this page says exactly that — a page said nothing — rather than concluding the product cannot do it.
The sales and royalty figures are modeled, and BookBeam says so
BookBeam's sales and royalty figures are estimates modeled from Amazon Best Sellers Rank, not measured sales. In its own words: “The sales figures come from our proprietary sales calculation engine. We have analyzed the sales data of books in several Amazon marketplaces to create reliable estimates based on large sets of verifiable data,” and “we have used data from real Amazon book sales and mapped it to Amazon best seller rankings.” That is a different kind of number from the one on your own royalty statement — not a worse one. No error margin is published, by them or by anyone else, so nobody can honestly tell you how far apart the two land.
SourceBookBeam — Book Sales Calculatorchecked 21 August 2026
The numbers describe any book on Amazon, not your account
BookBeam's Book Tracker reports royalties as estimates for any book on Amazon, not a user's own KDP earnings: “Track any book on Amazon and follow it's performance over time,” “Track Sales, Rank and Royalties,” “Peek behind the scenes and see royalty estimates for any book over time.” Its Chrome Extension works the same way — “Powerful Book Market Insights As You Browse Amazon,” showing “sales, royalties and other critical metrics for any book on Amazon.” That is exactly what you want when you are sizing up a niche, and exactly not what you want when you are closing your own month.
SourceBookBeam — Book TrackerBookBeam — Chrome Extensionchecked 21 August 2026
On the published plan table there is no advertising row and no KDP connection
On 21 August 2026, BookBeam's published plan-comparison table listed the feature groups Overview, Production, Research, Book Optimization, Tracking & Analysis, Data, and Education & Community, and contained no row for Amazon Ads or PPC campaign creation, bid management, ACOS or ad reporting, and no row for connecting a KDP account or importing KDP sales or royalty reports. Read that as what it is: a marketing table on a date, not a tour of the product. We have never held a paid BookBeam account, so we will not tell you what the software can or cannot do inside.
SourceBookBeam — Pricing and plan comparisonchecked 21 August 2026
KENP appears as a manual-entry calculator
BookBeam's published plan table lists no KENP page-read data, and its KENP calculator is a manual-entry tool: its own instructions say “go to your KDP Bookshelf and click the Promote and Advertise button for whichever book you want to know the page count.” Same caveat as above — this describes the pages we read, not a verified absence in the product.
SourceBookBeam — Pricing and plan comparisonBookBeam — KENP Royalty Calculatorchecked 21 August 2026
Every plan carries hard usage caps
BookBeam's plans carry hard usage caps: Book Tracker 20 / 40 / 150 books, keyword rank tracking 100 / 200 / 200 keywords, Niche Finder 120 / 250 / 750 searches per month, Chrome Extension 250 / 500 / 1500 history views, and Best Sellers Rank history limited to 1 year on the entry plan (all history on the two higher plans). Worth checking against the size of your catalog before you pick a tier.
SourceBookBeam — Pricing and plan comparisonchecked 21 August 2026
How often the data refreshes is not published
BookBeam does not publish how often its own BSR, sales or royalty data refreshes; we found no refresh interval on its product pages or in its help center as of 21 August 2026. To be clear about what that does and does not mean: an unpublished number is not a slow number. We have no evidence either way, so freshness is one axis on which we are not going to compare ourselves to BookBeam at all.
SourceBookBeam help center — Why average BSR changeschecked 21 August 2026
No trial of the paid plans, and the guarantee has a clause
As of August 2026, BookBeam's pricing page states: “We do not offer a free trial,” and instead offers a “7-Day Money Back Guarantee,” which the same page qualifies: “This does not apply to 2 consecutive subscriptions.” The free way in is the Chrome extension tier rather than the full product.
SourceBookBeam — Pricing and plan comparisonBookBeam — Chrome Extension Litechecked 21 August 2026
What SelfPub Go does differently.
Not more features — a different question, asked at a different time. BookBeam answers “what is this market worth?” SelfPub Go answers “what did my books earn this week, and what did the ads cost me?”
Ad spend and royalties in the same row
Royalty in, ad spend out, refunds deducted, KENP page reads counted — one line per book, per day. ACOS is measured against what a sale actually pays you instead of the cover price, so profit per book is a number on the screen rather than a calculation you do at midnight.
Your own account, not a model of somebody else's
SelfPub Go reads the KDP royalty export you point it at and your own Amazon Ads account through Amazon's official Advertising API. Those are the amounts Amazon charged you and credited to you — the figures on your own statements, joined per book and per marketplace.
The ads side is a control surface, not a report
Sponsored Products, Sponsored Brands and Sponsored Display in one table, with bulk bid edits and search-term reports parsed for the terms quietly eating your budget. The rules engine proposes changes and every one of them waits for you to approve it — nothing executes on its own.
Royalty reports stay on your computer
SelfPub Go is a desktop app for macOS and Windows. Royalty reports are parsed and stored locally and never uploaded to us. Advertising data comes from Amazon's official Advertising API through our servers, because that is the only way that API works — those are campaign metrics, not your earnings.
SelfPub Go vs BookBeam, row by row.
The BookBeam column is what its own pages said on 21 August 2026, quoted where the wording matters. Where its pages are silent, this table says the pages were silent — it does not fill the gap with a guess.
| BookBeam | SelfPub Go | |
|---|---|---|
| What it is | A web platform plus a Chrome extension. The extension runs only on desktop or laptop computers in Google Chrome, per BookBeam's own help center; the web platform itself can be used on a phone or tablet, though BookBeam recommends “using it on a laptop or desktop computer for an optimal experience.” | A desktop app for macOS and Windows. |
| The job it is built for | Research and production for Amazon self-publishers — niches, categories, keywords, trademark checks, listing and description work, plus content tools BookBeam names itself. | Ad spend and royalty once the book is live and the campaigns are running. |
| Whose books the numbers describe | Any book on Amazon: “Track any book on Amazon and follow it's performance over time,” “Peek behind the scenes and see royalty estimates for any book over time.” | Yours: the KDP royalty export you point the app at, and your own Amazon Ads account. |
| Where the sales and royalty figures come from | Modeled from rank, in its own words: “we have used data from real Amazon book sales and mapped it to Amazon best seller rankings.” | Spend from Amazon's Advertising API joined to the royalty in your own KDP export, per book and per day. |
| Amazon Ads | No row on the published plan table as of 21 August 2026: it listed the groups Overview, Production, Research, Book Optimization, Tracking & Analysis, Data and Education & Community, and contained no row for Amazon Ads or PPC campaign creation, bid management, ACOS or ad reporting. We read a marketing table, not the product. | Sponsored Products, Sponsored Brands and Sponsored Display in one table, with bulk bid edits, search-term reports and negative keywords. Suggested changes wait for your approval. |
| Connecting a KDP account | Not listed on the published plan table as of 21 August 2026: it contained no row for connecting a KDP account or importing KDP sales or royalty reports. | You point the app at your KDP royalty reports, and it can watch your Downloads folder so the next export imports itself. |
| KENP page reads | Its published plan table lists no KENP page-read data, and its KENP calculator is manual entry: “go to your KDP Bookshelf and click the Promote and Advertise button for whichever book you want to know the page count.” | Counted into profit per book. The KENP rate is an estimate until Amazon publishes it, and past months recalculate when it does. |
| Marketplaces | Seven Amazon marketplaces: “At this time we support seven of the biggest Amazon marketplaces: US (.com), Canada (.ca), UK (.co.uk), Germany (.de), France (.fr), Italy (.it), and Spain (.es).” | Amazon only — whichever marketplaces your own KDP reports and Amazon Ads account contain. |
| How often the data refreshes | Not published. We found no refresh interval on its product pages or in its help center as of 21 August 2026, which tells you nothing about the speed either way. | Ads data in real time. Royalties on each report import. |
| Usage caps | Hard caps on every plan: Book Tracker 20 / 40 / 150 books, keyword rank tracking 100 / 200 / 200 keywords, Niche Finder 120 / 250 / 750 searches per month, Chrome Extension 250 / 500 / 1500 history views, BSR history 1 year on the entry plan. | No plan tiers to cap — SelfPub Go is in closed early access. |
| What it costs | As of August 2026: Basic $47/mo ($141 quarterly, $348/yr = $29/mo), Publisher $69/mo ($207 quarterly, $576/yr = $48/mo), Publisher Pro $119/mo ($357 quarterly, $984/yr = $82/mo). Its pricing page states “We do not offer a free trial,” and offers a “7-Day Money Back Guarantee” qualified as “This does not apply to 2 consecutive subscriptions.” A separate free extension tier, Chrome Extension Lite, needs no card. | Not published — SelfPub Go is in closed early access and there is no checkout. |
About the price row
Those figures are the ones BookBeam published on its pricing page as of August 2026, and the page shows amounts with a “$” symbol without naming a currency code, so that is how we print them. By their own arithmetic the quarterly price equals three monthly payments — the discount lives in the annual plan. Prices move: read the current ones on their page, not on ours.
Which one should you use?
These two are not really rivals. BookBeam does its work before a book exists; SelfPub Go does its work once the book is earning and the ads are spending. For a lot of authors the answer is “whichever half you are in this month” — and for plenty of them, both.
Reach for BookBeam if…
- The next decision in front of you is what to write, in which niche, in which category — before anything is published.
- You want keyword and reverse-keyword research, trademark checks, and help with the listing and the description.
- You want a free way to read market data while you browse Amazon: its Chrome Extension Lite tier is described as “The free tier of the BookBeam Chrome Extension” with “No Credit Card Required.”
- Estimates for other people's books are precisely the data you need, because your own book does not exist yet.
Reach for SelfPub Go if…
- The books are live, the campaigns are running, and the spend is real money leaving your account every day.
- You need ACOS scored against your royalty rather than the cover price, with KENP page reads counted in.
- The question you cannot answer is profit per book this week, not market size last quarter.
- You would rather your royalty files never left your own computer.
Many authors run both
- They sit at different moments of the same job: BookBeam before the book exists, SelfPub Go once it is earning and advertising.
- Nothing about one blocks the other — one reads the market, the other reads your own account.
- Positioning head-on against a research suite would simply be inaccurate, so we are not going to do it.
Questions we get asked about BookBeam.
Does BookBeam manage Amazon Ads campaigns?
We checked its published plan-comparison table on 21 August 2026, and that is all we checked. On that date the table listed the feature groups Overview, Production, Research, Book Optimization, Tracking & Analysis, Data and Education & Community, and contained no row for Amazon Ads or PPC campaign creation, bid management, ACOS or ad reporting. We have never held a paid account, so we are describing a marketing page, not the inside of the software. If there is an advertising surface in there, tell us and we will correct this page.
Can BookBeam show me my own KDP royalties and KENP page reads?
What we can say is what its pages describe. Its Book Tracker reports royalties as estimates for any book on Amazon — “Peek behind the scenes and see royalty estimates for any book over time” — rather than a user's own KDP earnings. Its published plan table listed no row for connecting a KDP account or importing KDP sales or royalty reports, and no KENP page-read data, as of 21 August 2026; its KENP calculator asks you to fetch the page count from KDP yourself. Again: pages read on a date, not a verified absence.
Are BookBeam's sales and royalty numbers accurate?
We do not know, and we are not going to guess. BookBeam publishes no error margin, confidence interval or validation study, so the gap between its estimates and real sales cannot be measured by us or by anyone else reading its site. What is knowable is the kind of number it is, because BookBeam states it plainly: sales and royalty figures are modeled from Amazon Best Sellers Rank — “we have used data from real Amazon book sales and mapped it to Amazon best seller rankings.” SelfPub Go reads a different kind of number: the royalty on your own KDP export and the spend on your own ads account. Different type of data, not a measured winner.
How often does BookBeam refresh its data?
Unknown. BookBeam does not publish how often its own BSR, sales or royalty data refreshes, and we found no refresh interval on its product pages or in its help center as of 21 August 2026. That is a gap in what a buyer can find out, not evidence that anything is slow — so we make no freshness claim against BookBeam in either direction.
Can SelfPub Go replace BookBeam?
No, and the reverse is also true. BookBeam is a research and production suite for Amazon self-publishers — niche and category research, keywords, trademark checks, listing work, and content tools it names itself: Niche Finder, Category History, Trademark Checker, Keyword Research, Reverse Keyword, Category Explorer, Listing Optimizer, Description Formatter, Book Tracker, BookBeam Create, AI Assistant, AI Editor and Opt-In Page Builder. SelfPub Go does none of that and has no plans to. If your question is which book to write next, we are silent; if your question is what this month's campaigns cost against what the books paid you, that is the whole product.
How current are the facts on this page?
Every statement about BookBeam here was read from BookBeam's own pages on 21 August 2026, and each source is linked below. Prices, plans and features change without notice, so this page is scheduled for re-verification by 21 November 2026. If something has changed, tell us and we will fix it.
Facts checked August 2026
Every statement about BookBeam on this page comes from BookBeam’s own website, quoted or closely paraphrased, and links to the page it came from. All of it was read on 21 August 2026, and this page is scheduled for re-verification by 21 November 2026. We have not held a paid BookBeam account, so where their pages say nothing about a feature this page reports that the page said nothing — it does not conclude the feature is missing. Where they publish no figure at all, such as how often their data refreshes, the answer here is “unknown” rather than a guess in our own favour.
- BookBeam — Homepage
- BookBeam — Pricing and plan comparison
- BookBeam — Chrome Extension
- BookBeam — Chrome Extension Lite
- BookBeam — Book Tracker
- BookBeam — Book Sales Calculator
- BookBeam — KENP Royalty Calculator
- BookBeam help center — Phone and tablet
- BookBeam help center — Why average BSR changes
BookBeam is not affiliated with SelfPub Go, and this page is not endorsed by or connected to BookBeam in any way. Product names, trademarks and quotations belong to their owners and are used here for identification and comparison.