# Best KDP keyword and niche research tools

Source: https://createkdpbook.com/best/kdp-keyword-research-tools · checked 2026-11-13 · Create KDP Book, made by the team behind KDP Coloring Book Studio. Tools marked (ours) are our products.

For KDP keyword research, Publisher Rocket ($199 once, desktop app) and KDSpy ($79 once, browser extension) are the pay-once options; Book Bolt ($19.99 to $35.99 a month) and Self Publishing Titans ($20 to $90 a month) target low-content and coloring publishers and bundle book makers; BookBeam ($47 to $119 a month) has the deepest data, including USPTO and EUIPO trademark search. Start with Amazon's own search bar, which KDP itself recommends, before paying for any of them. None of these tools is ours.

## Quick picks
- Pay once, desktop: Publisher Rocket. One $199 payment for keywords, categories and Amazon Ads keyword lists.
- Cheapest paid: KDSpy. $79 once, with sales estimates shown while you browse Amazon.
- Low-content and coloring: Self Publishing Titans. Free starter tools, then research plus coloring and puzzle book makers in one plan.
- Deepest data: BookBeam. BSR history, tracking and USPTO/EUIPO trademark search for an established catalog.

## Publisher Rocket

Website: https://publisherrocket.com/
- Price: $199 once
- Trial / free: No trial; 30-day refund
- Platform: Desktop app (Windows, Mac, Chromebook)
- Search volume: Not documented
- Trademark check: Not documented
- Low-content tools: Not documented
- Price: One-time $199 (shown down from $299) with lifetime access and free updates. Its sales page warns it may move to an annual subscription, without a date.
- Keywords: Keyword search for choosing your 7 KDP keywords; whether it shows a monthly search-volume number isn't stated on the pages we read.
- Categories: Category search across more than 19,000 Amazon categories.
- Competition: A Competition Analyzer with competing books' sales and rankings.
- Amazon Ads: An AMS keyword generator for large ad keyword lists, plus a Reverse ASIN feature.
- Marketplaces: 8 Amazon stores: US, UK, Germany, Australia, Spain, France, Canada, Italy.
- Best for: Authors who want a pay-once desktop tool for KDP keywords, categories and Amazon Ads keyword lists instead of another subscription.
- Limits: Not a web app: no iPad, tablet or phone. The license is tied to a limited number of computers.
- Sources: https://publisherrocket.com/, https://publisherrocket.com/download, https://publisherrocket.com/support/, https://publisherrocket.com/tutorials/

## Book Bolt

Website: https://bookbolt.io/
- Price: $19.99 to $35.99/mo
- Trial / free: 3-day trial
- Platform: Web app + Chrome extensions
- Search volume: Yes (Amazon and Google)
- Trademark check: Not documented
- Low-content tools: Yes: designer, coloring, puzzles
- Price: Pro $23.99/month or $19.99/month billed yearly; Premium $35.99/month or $29.99/month billed yearly.
- Keywords: Amazon and Google search volume, a difficulty score and estimated monthly sales per keyword; reverse lookup of a competitor's keywords.
- Categories and niches: A KDP Category Finder with the sales needed to reach #1, niche research and a guided niche finder over 5M+ titles.
- Sales data: Bestseller Tracker with BSR, price and review history.
- Low-content: Book Bolt Studio builds covers, journals, planners, coloring and activity books, and generates sudoku, mazes, word search and crosswords.
- Free: A royalty calculator without an account. Its browser extension is called “KDP Spy”, a different product from KDSpy.
- Best for: Low-content and puzzle publishers who want keyword research and a cover and interior designer in one subscription.
- Limits: Its pricing page gives two different monthly AI credit numbers for the same plans (3,000/5,000 on the cards, 1,000/4,000 in the table). Marketplaces covered aren't listed.
- Sources: https://bookbolt.io/, https://bookbolt.io/pricing/, https://bookbolt.io/keyword-research/, https://bookbolt.io/product-research/, https://bookbolt.io/kdp-category-finder/

## KDSpy

Website: https://www.kdspy.com/
- Price: $79 once
- Trial / free: No trial; 60-day refund
- Platform: Browser extension (Chrome, Firefox)
- Search volume: No (revenue potential instead)
- Trademark check: Not documented
- Low-content tools: Not documented
- Price: One-time $79 plus tax if applicable, no monthly fees, free updates. One license covers up to 2 personal devices.
- Keywords: Revenue potential per keyword and A-Z suggestions; no search-volume figure documented.
- Categories: Analysis across more than 25,000 Kindle, book and audiobook categories.
- Sales data: Daily sales needed for page one, competitors' estimated monthly revenue, and 30-day rank tracking.
- Marketplaces: Its page lists 13 Amazon stores (Poland marked new) while the headline says 12.
- Best for: Authors, especially of fiction, who want cheap one-time sales and revenue estimates on Amazon's pages while they browse.
- Limits: Only works while browsing Amazon on a desktop browser. Its page says most customers are fiction authors.
- Sources: https://www.kdspy.com/

## Self Publishing Titans

Website: https://selfpublishingtitans.com/
- Price: $20 to $90/mo
- Trial / free: 3-day trial + free tools
- Platform: Web apps + Chrome extensions
- Search volume: Yes (estimated)
- Trademark check: Yes, beta (Publisher plan up)
- Low-content tools: Yes: coloring, low-content, puzzles
- Price: Hobbyist $20/month ($180/year), Author $35 ($300), Publisher $60 ($540), Empire $90 ($780). Paid add-ons such as Hot Niches at $9/month.
- Free: Category Finder, BSR Sales Calculator, Royalty Calculator, Cover Template Generator and a free keyword page, without a plan.
- Keywords: The Titans Pro extension shows Amazon suggestions, estimated search volume and a demand and opportunity score; 300 to 600 searches a month by plan.
- Research: Reverse ASIN, competitor niche research, trackers and the Trademark Checker (marked beta) start at the $60 Publisher plan.
- Low-content: Coloring Book Maker, Low Content Book Maker and puzzle generators from the Author plan.
- Best for: Low-content and coloring publishers who want free starter tools first and, later, one plan that bundles research, trademark checks and book makers.
- Limits: Card required for the trial and payments are non-refundable. The research tools need the Publisher plan or higher.
- Sources: https://selfpublishingtitans.com/, https://selfpublishingtitans.com/pricing, https://selfpublishingtitans.com/tools/trademark-checker, https://selfpublishingtitans.com/tools/kdp-keyword-research-tool, https://chromewebstore.google.com/detail/titans-pro-amazon-kdp-key/efdbcjcbgmadkmmcoojnncednmkelcli

## BookBeam

Website: https://bookbeam.io/
- Price: $47 to $119/mo
- Trial / free: No trial; 7-day refund; free Lite extension
- Platform: Web app + Chrome extension
- Search volume: Yes (estimated)
- Trademark check: Yes (USPTO and EUIPO)
- Low-content tools: Partly (interior builder)
- Price: Basic $47/month, Publisher $69/month, Publisher Pro $119/month (5 seats); quarterly and yearly billing also offered.
- Keywords: Unlimited keyword research on all plans with demand, competition and estimated search volume; a Reverse Keyword tool.
- Categories and niches: Category Explorer over 45,000+ categories with history, and a Niche Finder over 200M+ books (120 to 750 searches a month by plan).
- Sales data: Sales and royalty estimates in the extension, BSR history and a Book Tracker.
- Trademarks: A Trademark Checker that searches the USPTO and EUIPO databases.
- Marketplaces: 7 Amazon stores: US, Canada, UK, Germany, France, Italy, Spain.
- Best for: Established publishers with a catalog who want deep data and trademark search and can justify a higher monthly price.
- Limits: No free trial. History is limited to 1 year on Basic. Coloring-specific features aren't documented.
- Sources: https://bookbeam.io/, https://bookbeam.io/pricing/

## Amazon's search bar (free)

Website: https://kdp.amazon.com/en_US/help/topic/G201298500
- Price: Free
- Trial / free: Free
- Platform: Amazon's website
- Search volume: No numbers
- Trademark check: No
- Low-content tools: No
- How: KDP's own keyword help page suggests typing candidate keywords into Amazon's search and reviewing the drop-down suggestions, which reflect what shoppers type.
- Rules: Up to 7 keywords or short phrases per book. KDP asks you to avoid repeating title or category words, subjective claims, misspellings, program names, HTML and quotation marks.
- Trademarks: KDP warns against brands you don't own or aren't authorized to use, and against naming unrelated authors.
- Best for: Beginners validating a handful of keyword ideas at zero cost before deciding whether a paid tool is worth it.
- Limits: No search volume, competition or sales data: every check is manual.
- Sources: https://kdp.amazon.com/en_US/help/topic/G201298500

## How we checked
- We read each tool's own website, pricing page and feature pages on 2026-11-13, and the KDP help page for the free baseline. The URLs are listed under each tool.
- When a page doesn't state something, we write “Not documented”. That means the page didn't say it, not that the feature is missing.
- Prices are in USD as shown on each pricing page and can change. No tool paid to be included and none of them is ours.

## Not included
- KDP Wizard: kdpwizard.com is a parked domain, and the remaining browser listing describes a bookshelf backup tool, not keyword research.
- Helium 10: A general Amazon-seller tool: its product and pricing pages don't mention books, KDP or authors, so we couldn't source any book-specific claim.

## Questions
### Do I need a paid keyword tool for KDP?
Not to start. KDP itself recommends checking keyword ideas in Amazon's search bar. A paid tool adds search-volume or sales estimates, category data and competition scores, which matter more once you publish regularly.

### Which KDP keyword tool has no monthly fee?
Publisher Rocket ($199 once, desktop app) and KDSpy ($79 once, browser extension) are one-time purchases according to their own pages.

### Which keyword tools help with coloring and low-content books?
Book Bolt and Self Publishing Titans both include coloring, low-content and puzzle book makers next to their research tools. BookBeam has an interior builder but doesn't document coloring-specific features.

### How many keywords can a KDP book have?
Seven keywords or short phrases per book, entered in the KDP details page.