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KDSpy Review: Price, Features and Score

KDSpy at a glance: $79 one-time, on browser extension. Below are its plans, what its own site says it does for an author, its score and the products to compare it with. We did not test it ourselves; the data was checked on October 7, 2026.

Prices and data checked October 7, 2026 · Author Score computed by a published formula, not paid for

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

BookBird Author Score7.4/10 #2 of 8 KDP research & sales tracking. Worked out from KDSpy’s own pages, its price and US searches for its name, not typed in. Author jobs50 pts35.7/50Each of the 7 author jobs on the KDP research & sales tracking list is worth an equal share of 50 points, and counts only when KDSpy’s own pages confirm it. 5 of 7 confirmed = 35.7 points. A job the vendor does not mention earns nothing.Cost25 pts23.8/25KDSpy costs $26.33 a year on its cheapest plan. Free earns 25 points; the dearest KDP research & sales tracking product with a US price, K-lytics at $444 a year, keeps 5; prices in between fall in a straight line. $26.33 = 23.8 points.Adoption25 pts14/25Searches, 20 points: 590 a month for “kdspy”, against Book Bolt, the most searched in this category (9,900), on a log scale = 13.9. Trend, 5 points: down 47% (last three months against the first three of the year) = 0.2; a fall of half or more earns 0, no change 2.5, a rise of half or more 5. 73.6 of 100 points= 7.4 out of 10 The full method, with every product’s points →

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

SoftwareScorePrice fromBest for
Publisher Rocket7.5$199 one-timeAuthors who prefer a one-time purchase over a research subscription
BookBeam6.9$348 a yearPublishers researching niches across several Amazon stores on a subscription
Titans Pro6.7Free plan; paid from $180 a yearKDP publishers wanting research plus book-creation tools, free tier to start
Book Bolt6.4$239.88 a yearLow-content and puzzle book publishers wanting research and design together
ScribeCount4.6$5.99 a monthWide 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.