KDSpy on the BookBird Author Score
Author Score · kDP research & sales tracking · #2 of 8
Best for: Authors wanting research on Amazon pages for a one-time price
73.6 of 100 points = 7.4 out of 10. How this score is calculated
Author jobs, from KDSpy’s own pages
- Not stated: Amazon keyword search estimates (not stated)
- Yes: Category finder
- Yes: Sales estimates for competing books
- Yes: Amazon Ads keyword lists
- Not stated: Your own royalties in one dashboard (not stated)
- Yes: Amazon stores outside the US
- Yes: Works on the Amazon page
KDSpy pricing
One-time licence. The plans as KDSpy’s own site listed them on October 7, 2026, in US dollars:
- KDSPY Pro: $79 one-time (regular price $197; plus tax if applicable; dual-device licence)
One-time payment, no recurring fees, 60-day money-back guarantee.
What KDSpy offers
From KDSpy’s own pages, checked on October 7, 2026:
- Runs in Chrome, Firefox, Edge, Opera and Brave on any desktop OS
- Category breakdown for 25,000+ Kindle, print and audiobook categories
- Daily sales needed to rank #1-20 in a category
- Keyword revenue potential with A-Z suggestions exportable for Amazon Ads
- Author page analysis with projected sales and revenue
- Tracks sales rank and revenue of any book over 30 days
- Data from 13 Amazon stores including UK, DE, JP and PL
- Exports of category, keyword and tracking results
Runs on: browser extension. Needs an internet connection. Launched: 2014.
Who KDSpy suits, and what its pages do not say
Best for: Authors wanting research on Amazon pages for a one-time price.
Not confirmed on KDSpy’s pages when we checked: amazon keyword search estimates and your own royalties in one dashboard. That is what the vendor states, not a test; a feature can exist without being described, and the score only credits what is.
About 590 people a month search Google in the US for “kdspy”, down 47% over the past year (Google Ads data via DataForSEO).
KDSpy alternatives
| Software | Score | Price from | Best for |
|---|---|---|---|
| Publisher Rocket | 7.5 | $199 one-time | Authors who prefer a one-time purchase over a research subscription |
| BookBeam | 6.9 | $348 a year | Publishers researching niches across several Amazon stores on a subscription |
| Titans Pro | 6.7 | Free plan; paid from $180 a year | KDP publishers wanting research plus book-creation tools, free tier to start |
| Book Bolt | 6.4 | $239.88 a year | Low-content and puzzle book publishers wanting research and design together |
| ScribeCount | 4.6 | $5.99 a month | Wide or KU authors tracking royalties across many stores, priced by income |
Compare: All kDP research & sales tracking · All software for authors
KDSpy questions
How much does KDSpy cost?
$79 one-time.
What does KDSpy run on?
browser extension, according to its own site.
How the score is computed: the formula, step by step. Prices and features were read from KDSpy’s own site on October 7, 2026; nobody pays to be listed.