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KDSPY – Keyword Research for Authors

Chrome extension by Publishing Altitude · Productivity · Workflow

  • Trader

A Chrome extension in Productivity · Workflow with 70 000 users, an established extension.

Specific sites only: 15 match patterns.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
70 000
Rating
3.7 (51 ratings)
Users, last 17 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
5.13.56
Updated in the store
2026-05-12
Published
2015-05-07
Manifest
V3
Browser access
3 permissions, 15 site patterns

How it has moved

Users
unchanged since 31.08
70k · 2 readings
  1. 2026-08-3170k
  2. 2026-09-1670k
Rating
unchanged since 31.08
reviewsrating 3.71 · 2 readings
  1. 2026-08-31reviews51rating3.71
  2. 2026-09-16reviews51rating3.71
Users
unchanged since 31.08
70k · 2 readings
  1. 2026-08-3170k
  2. 2026-09-1670k
Rating
unchanged since 31.08
reviewsrating 3.71 · 2 readings
  1. 2026-08-31reviews51rating3.71
  2. 2026-09-16reviews51rating3.71

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 15 match patterns.

  • *://*.publishingaltitude.com/*
  • *://*.google.com/*
  • *://*.amazon.com/*
Show the remaining 9
  • *://*.amazon.co.uk/*
  • *://*.amazon.de/*
  • *://*.amazon.fr/*
  • *://*.amazon.pl/*
  • *://*.amazon.ca/*
  • *://*.amazon.it/*
  • *://*.amazon.es/*
  • *://*.amazon.in/*
  • *://*.amazon.co.jp/*
  • Run its own code on the pages it can access scripting
  • Schedule work to run later alarms
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Publishing Altitude publishes 3 listings we track, 77k users between them. Listed website: kdspy.com.

  1. KDROI – Book Marketing Tools for Authors Publishing Altitude · Productivity · Workflow · published 2015-08-22 6k users ★ 5.0
  2. Prompt Blaze — AI Prompt Chaining Simplified Publishing Altitude · Productivity · Workflow · published 2023-10-12 1k users ★ 3.8

Like this one

Listings the catalog judges closest in what they say they do.

  1. KDP Book Niche Finder Describes nearly the same job, smaller audience 300 users ★ 5.0
  2. KDP Lens Describes nearly the same job, smaller audience 53 users
  3. KDP Quick Insights — Amazon BSR, Sales Estimator & Niche Research Describes nearly the same job, smaller audience 46 users
  4. SmartKDP – Book Sales & Royalty Estimator Describes nearly the same job, smaller audience 7 users
  5. Fihrist Lab by Glidd.io Describes nearly the same job, smaller audience 4 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

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See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.