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KDSPY – Keyword Research for Authors

Chrome extension by Publishing Altitude · Productivity · Workflow

  • Established publisher
  • Trader

A Chrome extension in Productivity · Workflow with 70 000 users, an established extension. Audience over the last 30 days: unchanged.

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
3.8 (53 ratings)
Users, last 30 days
Unchanged (the store rounds this count to 10 000, so it moves only between steps)
Rating, last 30 days
Steady over 30 days
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 14.10
70k-80k · 6 readings
  1. 2026-10-1680k
  2. 2026-10-2370k
  3. 2026-10-2970k
  4. 2026-11-0580k
  5. 2026-11-0770k
  6. 2026-11-1370k
Rating
+0.049 since 14.10
reviewsrating 3.706-3.755 · 6 readings
  1. 2026-10-16reviews52rating3.731
  2. 2026-10-23reviews52rating3.731
  3. 2026-10-29reviews53rating3.755
  4. 2026-11-05reviews53rating3.755
  5. 2026-11-07reviews53rating3.755
  6. 2026-11-13reviews53rating3.755
Users
unchanged since 31.08
70k-80k · 11 readings
  1. 2026-08-3170k
  2. 2026-09-1780k
  3. 2026-09-2070k
  4. 2026-10-0480k
  5. 2026-10-1070k
  6. 2026-10-1680k
  7. 2026-10-2370k
  8. 2026-10-2970k
  9. 2026-11-0580k
  10. 2026-11-0770k
  11. 2026-11-1370k
Rating
+0.049 since 31.08
reviewsrating 3.706-3.755 · 11 readings
  1. 2026-08-31reviews51rating3.706
  2. 2026-09-17reviews51rating3.706
  3. 2026-09-20reviews51rating3.706
  4. 2026-10-04reviews51rating3.706
  5. 2026-10-10reviews51rating3.706
  6. 2026-10-16reviews52rating3.731
  7. 2026-10-23reviews52rating3.731
  8. 2026-10-29reviews53rating3.755
  9. 2026-11-05reviews53rating3.755
  10. 2026-11-07reviews53rating3.755
  11. 2026-11-13reviews53rating3.755

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times 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. Nicherr: KDP Niche Hunter Describes nearly the same job, smaller audience 44 users
  2. KDP Metric — Amazon Book Niche Research Describes nearly the same job, smaller audience 365 users ★ 5.0
  3. KDP Book Niche Finder Describes nearly the same job, smaller audience 617 users ★ 5.0
  4. Booktol Niche Describes nearly the same job, smaller audience 15 users ★ 5.0
  5. KDP Lens Describes nearly the same job, smaller audience 65 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.

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Users and rating on Ext Ops Panel

Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/oocoibgfbhcplhnfdjldohepoeboiloo/badge.svg)](https://extops.dev/extensions/oocoibgfbhcplhnfdjldohepoeboiloo)

HTML

<a href="https://extops.dev/extensions/oocoibgfbhcplhnfdjldohepoeboiloo"><img src="https://extops.dev/extensions/oocoibgfbhcplhnfdjldohepoeboiloo/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-07. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built