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Kindle Series Sale Tracker

Chrome extension by harnesswinner · Lifestyle · Shopping

A Chrome extension in Lifestyle · Shopping with 18 users, barely installed. Audience over the last 30 days: +7.

Specific sites only: 1 match pattern.

What the developer says, and 2 screenshots

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

Users
18
Rating
5.0 (1 ratings)
Users, last 30 days
+7
Rating, last 30 days
Steady over 30 days
Version
0.5.7
Updated in the store
2026-10-18
Published
2026-06-02
Manifest
V3
Browser access
5 permissions, 1 site pattern

How it has moved

Users
+7 since 02.10
11-19 · 13 readings
2026-10-19: released 0.5.7
  1. 2026-10-0812
  2. 2026-10-0913
  3. 2026-10-1012
  4. 2026-10-1313
  5. 2026-10-1614
  6. 2026-10-1816
  7. 2026-10-1915released 0.5.7
  8. 2026-10-2118
  9. 2026-10-2419
  10. 2026-10-2518
  11. 2026-10-2617
  12. 2026-10-3019
  13. 2026-11-0118
Rating
unchanged since 02.10
reviewsrating 5.00 · 13 readings
2026-10-19: released 0.5.7
  1. 2026-10-08reviews1rating5.00
  2. 2026-10-09reviews1rating5.00
  3. 2026-10-10reviews1rating5.00
  4. 2026-10-13reviews1rating5.00
  5. 2026-10-16reviews1rating5.00
  6. 2026-10-18reviews1rating5.00
  7. 2026-10-19reviews1rating5.00released 0.5.7
  8. 2026-10-21reviews1rating5.00
  9. 2026-10-24reviews1rating5.00
  10. 2026-10-25reviews1rating5.00
  11. 2026-10-26reviews1rating5.00
  12. 2026-10-30reviews1rating5.00
  13. 2026-11-01reviews1rating5.00
Users
+8 since 31.08
10-19 · 27 readings
2026-09-06: released 0.5.42026-09-09: released 0.5.52026-09-14: released 0.5.62026-10-19: released 0.5.7
  1. 2026-08-3110
  2. 2026-09-0311
  3. 2026-09-0410
  4. 2026-09-0612released 0.5.4
  5. 2026-09-0711
  6. 2026-09-0812
  7. 2026-09-1011
  8. 2026-09-1310
  9. 2026-09-1512
  10. 2026-09-1711
  11. 2026-09-2012
  12. 2026-09-2111
  13. 2026-09-2712
  14. 2026-09-2811
  15. 2026-10-0812
  16. 2026-10-0913
  17. 2026-10-1012
  18. 2026-10-1313
  19. 2026-10-1614
  20. 2026-10-1816
  21. 2026-10-1915released 0.5.7
  22. 2026-10-2118
  23. 2026-10-2419
  24. 2026-10-2518
  25. 2026-10-2617
  26. 2026-10-3019
  27. 2026-11-0118
Rating
+5.00 since 31.08
reviewsrating 0.00-5.00 · 27 readings
2026-09-06: released 0.5.42026-09-09: released 0.5.52026-09-14: released 0.5.62026-10-19: released 0.5.7
  1. 2026-08-31reviews0rating0.00
  2. 2026-09-03reviews0rating0.00
  3. 2026-09-04reviews0rating0.00
  4. 2026-09-06reviews0rating0.00released 0.5.4
  5. 2026-09-07reviews0rating0.00
  6. 2026-09-08reviews1rating5.00
  7. 2026-09-10reviews1rating5.00
  8. 2026-09-13reviews1rating5.00
  9. 2026-09-15reviews1rating5.00
  10. 2026-09-17reviews1rating5.00
  11. 2026-09-20reviews1rating5.00
  12. 2026-09-21reviews1rating5.00
  13. 2026-09-27reviews1rating5.00
  14. 2026-09-28reviews1rating5.00
  15. 2026-10-08reviews1rating5.00
  16. 2026-10-09reviews1rating5.00
  17. 2026-10-10reviews1rating5.00
  18. 2026-10-13reviews1rating5.00
  19. 2026-10-16reviews1rating5.00
  20. 2026-10-18reviews1rating5.00
  21. 2026-10-19reviews1rating5.00released 0.5.7
  22. 2026-10-21reviews1rating5.00
  23. 2026-10-24reviews1rating5.00
  24. 2026-10-25reviews1rating5.00
  25. 2026-10-26reviews1rating5.00
  26. 2026-10-30reviews1rating5.00
  27. 2026-11-01reviews1rating5.00

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: 1 match pattern.

  • https://www.amazon.co.jp/*
  • Act on the current tab, but only after you click it activeTab
  • Schedule work to run later alarms
  • Run work in a hidden page offscreen
Show the remaining 2

The full permission history for this extension

Version history

  1. Version 0.5.7
  2. Version 0.5.6
  3. Version 0.5.5
Show the remaining 1
  1. Version 0.5.4

What changed recently

  1. Package size changed
  2. Released version 0.5.7 (was 0.5.6)
  3. Package size changed
Show the remaining 5
  1. Released version 0.5.6 (was 0.5.5)
  2. Package size changed
  3. Released version 0.5.5 (was 0.5.4)
  4. Package size changed
  5. Released version 0.5.4 (was 0.5.3)

The publisher

harnesswinner publishes 3 listings we track, 421 users between them.

  1. YouTube Playlist Date Sorter harnesswinner · Lifestyle · Entertainment · published 2026-05-21 369 users ★ 4.0
  2. Amazon Wishlist Sale Picker harnesswinner · Lifestyle · Shopping · published 2026-04-28 34 users

Like this one

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

  1. Kindle Sales List Aggregator Describes nearly the same job, smaller audience 4 users
  2. eReaderIQ Integrator Describes nearly the same job, smaller audience 2k users ★ 4.9
  3. eReaderIQ Injector Describes nearly the same job, smaller audience 2k users ★ 3.2
  4. Amazon Book List Downloader — Kindle, Audible & More Describes nearly the same job, smaller audience 5k users ★ 4.8
  5. Book List Export for Amazon Kindle Describes nearly the same job, smaller audience 290 users ★ 2.0

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

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HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built