KDSPY
KDSPY is a paid browser extension that shows category, keyword, competitor and revenue estimates directly on Amazon pages.
At a glance
- Price
- $79 one-time ($79 one-time plus tax, shown as down from a regular $197. Dual license for two devices. 60-day money-back guarantee.)
- Refund window
- 60 days
- Platforms
- Chrome extension, Firefox extension
- Outputs KDP-ready files
- No
- Touches your KDP account
- No
- Amazon marketplaces
- us, uk, ca, de, au, it, es, fr, in, jp, mx, br, pl
- Categories
- Book & Niche Research, Keywords & Categories
- Last checked
- 2026-11-09
Summary
KDSPY works inside the browser while you browse Amazon: category breakdowns with estimated revenue and daily sales needed to rank, keyword analysis, author and publisher analysis, and 30-day book tracking. It is sold as a one-time purchase with a 60-day refund window. Its sales and revenue figures are estimates. It is not affiliated with Amazon.
Best for
- Quick niche and competitor checks while browsing Amazon
Pros
- One-time price with a 60-day refund window
- Works in Chrome, Firefox, Edge, Opera and Brave
Cons
- Book tracking covers 30 days
- Does not work on iPads, tablets or phones
In our guides
- Publisher Rocket vs KDSPY
- Best free and one-time KDP tools: no subscriptions
- Best KDP keyword and category research tools
Alternatives
- Publisher Rocket: Publisher Rocket is a downloadable keyword, category and competition research app for Amazon book publishers, sold as a one-time purchase.
- BookBeam: BookBeam is a subscription web app and Chrome extension for niche research, keyword research and ongoing tracking of books on Amazon.
- DS Amazon Quick View: DS Amazon Quick View is a free Chrome extension that shows Best Sellers Rank and ASIN on Amazon.com search results, with a paid Extended version.
Sources
Facts on this page come from the vendor and these pages. Prices change; confirm on the vendor site.
Something wrong or out of date? Send a correction. Plain-text version.