Publisher Rocket
$199 once
A one-time price for lifetime access with free updates and a 30-day money-back guarantee.
Part of the Amazon KDP guide
AIWriteBook vs Publisher Rocket: 2026 Comparison
Publisher Rocket answers one question very well: which keywords and categories will help a book get found on Amazon. It does not write, format or upload the book. AIWriteBook does those parts, and the two meet at the listing.
Free to start, no credit card
Rated 4.7 out of 5 in 612 reviews
Where Rocket sits in the book's life
Five steps from idea to a book that sells. Rocket works at the edges, AIWriteBook works through the middle, and both touch the listing.
Validate the idea
Publisher Rocket, and AIWriteBook's free toolsRocket's Keyword Search and Competition Analyzer show what readers type into Amazon and how crowded the results are. AIWriteBook's free niche finder and competition analyzer give a quick first read before you commit.
Write the book
AIWriteBookOutline, characters and chapters in your own style, or import a .docx draft up to 200,000 words and keep writing. Rocket has no writing tools.
Format and cover
AIWriteBookPrint PDF, an EPUB checked with EPUBCheck, DOCX and a wrap cover from one formatter, plus an AI cover at the KDP ratio.
Fill the listing
Both tools compete hereSeven keyword slots, up to three categories, a description. Rocket researches what goes in. AIWriteBook researches it too and fills the KDP form for you.
Advertise
Publisher RocketRocket generates keyword lists for Amazon Ads campaigns. AIWriteBook's marketing kit covers the blurb, A+ content and launch emails instead.
The overlap: listing metadata
This is the only stage where you would pick one tool over the other.
| What matters | Publisher Rocket | AIWriteBook |
|---|---|---|
| Keywords for the seven slots | Keyword Search plus the Amazon Keywords Generator | Free AI keyword tool, plus live Amazon research in the extension |
| Categories | Category Search across 19,000+ Amazon categories | Free category finder with BISAC codes, and category research in the extension |
| Competition | Competition Analyzer for any keyword | Free competition analyzer for any niche |
| Amazon Ads keywords | Keyword lists for Amazon Ads campaigns | Blurb, A+ content and launch emails in the marketing kit |
| Putting it into KDP | You copy results into KDP by hand | The extension fills the KDP form and checks every field |
| The book itself | Not part of the product | Written, formatted and exported in the same account |
Rocket's strength is depth. Category Search covers more than 19,000 Amazon categories, the Amazon Keywords Generator suggests terms for the seven KDP slots, and it works across the US, Canada, Australia, UK, Germany, France, Spain and Italy stores. Our guide to the seven keyword slots explains how to use those fields well whichever tool you pick.
AIWriteBook's strength is that research sits next to the book. The free KDP keyword research tool, category finder and competition analyzer give you a list in a minute, and the KDP Publishing Assistant reads live Amazon data from your own browser for category and niche research, then fills title, description, keywords, categories, manuscript and cover on the KDP page. Research has one free run, then Pro, Ultra or AppSumo Tier 3 or 4 at 100 credits a run. Checks and autofill are free forever.
Free to start, no credit card
One payment, or pay as you write
AIWriteBook
Free to start
Your outline and first chapter are free. Plans start at $12/mo billed yearly, and one-time packs start at $20 for 250 credits. Extension checks and autofill cost nothing.
Rocket is a research purchase. AIWriteBook is where the book gets made. If you already own Rocket, there is nothing to replace: keep using it for keywords and let AIWriteBook handle the rest.
Keep Publisher Rocket if
We would rather you pick the right tool than the wrong one.
- You run Amazon Ads and want keyword lists for campaigns
- You publish in several Amazon stores and research each one
- You already have the book written and formatted and only need metadata
- You prefer paying once over credits
Rocket research to a published book in three steps
Bring what you already found. Nothing is lost.
Start the book from your research
Paste your Rocket keywords and the niche into a new AIWriteBook book, or import your draft. The outline and first chapter are free.
Write and format
Finish the chapters in your voice, then run the formatter for print PDF, EPUB, DOCX and the wrap cover.
Fill KDP with the extension
Open KDP with the Publishing Assistant, add your seven keywords and three categories, and let it fill the rest. You review every page and press Publish.
Free to start, no credit card
Questions writers ask
Is AIWriteBook a Publisher Rocket alternative?
For keyword and category research, partly: AIWriteBook has free keyword, category and competition tools, and the KDP Publishing Assistant runs research from live Amazon data. For Amazon Ads keyword lists, Rocket is the specialist. AIWriteBook adds what Rocket does not do: writing, formatting, covers and filling the KDP form.
How much does Publisher Rocket cost?
Publisher Rocket is a one-time $199 purchase with lifetime access, free updates and a 30-day money-back guarantee.
Can I use my Publisher Rocket keywords in AIWriteBook?
Yes. Paste them into your book's metadata and the KDP Publishing Assistant puts them into the seven keyword fields on KDP, with live checks on each one.
Does Publisher Rocket write or format books?
No. Publisher Rocket covers keyword search, category search, competition analysis and Amazon Ads keywords. Writing, formatting and covers are where AIWriteBook comes in.
Is AIWriteBook's keyword tool free?
The web KDP keyword research tool, category finder and competition analyzer are free with no account. Live Amazon research in the extension has one free run, then needs Pro, Ultra or AppSumo Tier 3 or 4 at 100 credits a run.
Keep reading
You have the keywords. Now write the book.
Plan, write and edit your first chapter free.
Free to start, no credit card
- Outline and first chapter free
- Print PDF, EPUB, wrap cover and DOCX from one Generate
- 25 audiobook voices
- Write in 37 languages
- One-time credit packs from $20, no subscription