Five common Amazon KDP research tools compared on price, format, marketplaces and features. Facts about each tool come only from its official public pages, with the date checked and a link to the source; anything the site doesn't state is marked "Not stated". Each tool also gets a section on what it does better than KDPTop.
Competitor facts checked on 2026-11-11. Prices may have changed since; the official site is the final word.
| Feature | KDPTop | Book Bolt | Publisher Rocket | KDSPY | BookBeam |
|---|---|---|---|---|---|
| Price | Free plan; paid plans from $19.99/mo or $199/yr (Creator), Pro $39/mo, Team $99/mo with 5 seats | Pro $19.99/mo billed annually or $23.99 monthly; Premium $29.99/mo billed annually or $35.99 monthly | One-time $199 (listed down from $299), lifetime access | One-time $79 (listed down from $197), no monthly fees | Basic $47/mo or $29/mo billed annually; Publisher $69/mo or $48/mo annually; Publisher Pro $119/mo or $82/mo annually |
| Free plan or trial | Free plan (1 full category decision card a day, first 10 rows of every list, 3 AI questions a day); 7-day free trial of paid plans for new customers | 3-day free trial | No trial; 30-day money-back guarantee | No trial; 60-day money-back guarantee | No free trial |
| Refund | Full refund within 14 days of the first payment | Cancel during the trial and you are not charged; after a charge, support reviews each case | 30 days, full refund | 60 days, full refund | 7-day money-back guarantee |
| How you use it | Web app, free Chrome extension, REST API, MCP for ChatGPT, Claude and Cursor | Web app (Book Bolt Studio) and Chrome extensions | Desktop app for Windows, Mac and Chromebook | Browser extension (Chrome, Firefox, Edge, Opera, Brave); not on phones or tablets | Web app and Chrome extension |
| Amazon marketplaces | Amazon.com only (Books and Kindle) | Not stated | US, Canada, Australia, UK, Germany, France, Spain, Italy | 13 stores: US, UK, Canada, Germany, Australia, Italy, Spain, France, India, Japan, Mexico, Brazil, Poland | US, Canada, UK, Germany, France, Italy, Spain |
| Keyword search volume | Yes, monthly Amazon searches where data exists | Yes, with a difficulty score | Yes | Revenue potential, A-Z suggestions and competitor counts; search volume not stated | Yes, estimated search volume, plus a reverse keyword tool |
| Category research | Top 100 for 10,000+ categories, refreshed every 3 hours to 3 days, with a go / no-go decision card per category | Not stated | Yes, 19,000+ categories | Yes, 25,000+ Kindle, book and audiobook categories | Yes, category history |
| Sales estimates | Yes, daily estimates from BSR | Yes, on 5M+ tracked titles | Yes, in the competition analyzer | Yes, including daily sales needed to rank | Yes |
| Author analysis | Yes, pen names merged by Amazon Author ID, release timeline | Not stated | Not stated | Yes | Not stated |
| Daily new-release and rank alerts | Yes, KDP Feed updated every 30 minutes, daily breakouts | Not stated | Not stated | Tracks books you add, 30 days of rank | Book tracker with email updates, keyword rank tracking |
| Cover and interior design | No | Yes: cover designer, interior generators, puzzle creator, 1,200+ fonts | Not stated | Not stated | Description formatter and listing optimizer; no cover design stated |
| Amazon Ads keywords | No | Not stated | Yes, Amazon Ads keyword generator | Keyword lists exportable for Amazon Ads | Not stated |
| Audiobooks | No | Not stated | Not stated | Yes | Yes, Audible |
| AI features | AI research assistant that queries the live data and answers with charts | Yes, monthly AI credits for covers, images and descriptions | Not stated | Ready-made ChatGPT prompts | Yes, AI credits for creation tools, an AI assistant and editor |
| API | Yes | Not stated | Not stated | Not stated | Not stated |
Book Bolt combines niche and keyword research with a design studio for covers, interiors and puzzle books, so you can research and make a low-content book in one subscription.
Stronger than KDPTop at: Design is built in: covers sized to KDP trim, bleed and spine, plus journal, planner and log book interiors. One-click sudoku, mazes, word search and crosswords with solutions. Seller training courses are included.
See KDPTop vs Book Bolt in detail →Publisher Rocket is desktop software you buy once. It covers keyword search, category search, a competition analyzer and an Amazon Ads keyword generator across eight Amazon marketplaces.
Stronger than KDPTop at: Pay once instead of monthly. Eight Amazon marketplaces, not just the US. A keyword generator for Amazon Ads campaigns.
See KDPTop vs Publisher Rocket in detail →KDSPY is a browser extension you buy once. It analyzes the Amazon page you are on: categories, keywords, authors and books, with sales and revenue estimates, across 13 Amazon stores.
Stronger than KDPTop at: A one-time $79 with no subscription. 13 Amazon stores and audiobook categories. Results export, and it works on any Amazon page you open.
See KDPTop vs KDSPY in detail →BookBeam is a subscription web app with a Chrome extension: niche finder, keyword and reverse keyword research, category history, book and keyword rank tracking, listing tools and AI writing credits, across seven Amazon marketplaces.
Stronger than KDPTop at: Seven Amazon marketplaces and Audible. Tracks where your book ranks for each keyword. Listing optimizer and description formatter for your own book page.
See KDPTop vs BookBeam in detail →KDPTop has a free plan: one full category decision card a day and the first 10 rows of every list, no credit card.
Sign up for KDPTop freeWhat each plan gets youKDPTop has a free plan, and new customers get a 7-day free trial of paid plans. Book Bolt offers a 3-day free trial; Publisher Rocket, KDSPY and BookBeam list a refund guarantee instead of a free trial.
Publisher Rocket ($199) and KDSPY ($79) list a one-time payment. KDPTop, Book Bolt and BookBeam are subscriptions.
Publisher Rocket lists 8 marketplaces, KDSPY 13 and BookBeam 7; Book Bolt's site doesn't say. KDPTop covers Amazon.com only for now.
Competitor facts come only from each tool's official public pages, checked on 2026-11-11 and linked under Sources. Items a site doesn't mention are marked "Not stated", which does not mean the feature is missing. Prices can change, so check the official site before you buy.
