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PriceTracker JP

Chrome extension by qontan · Lifestyle · Shopping

  • Trader

A Chrome extension in Lifestyle · Shopping with 12 users, barely installed.

Specific sites only: 7 match patterns.

What the developer says, and 5 screenshots

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

Users
12
Rating
not rated yet
Users, last 15 days
-4
Version
0.1.0
Updated in the store
2026-03-11
Published
2026-03-11
Manifest
V3
Browser access
5 permissions, 7 site patterns

How it has moved

Users
-4 since 01.09
12-17 · 9 readings
  1. 2026-09-0116
  2. 2026-09-0217
  3. 2026-09-0415
  4. 2026-09-0516
  5. 2026-09-0713
  6. 2026-09-0914
  7. 2026-09-1013
  8. 2026-09-1312
  9. 2026-09-1512
Users
-4 since 01.09
12-17 · 9 readings
  1. 2026-09-0116
  2. 2026-09-0217
  3. 2026-09-0415
  4. 2026-09-0516
  5. 2026-09-0713
  6. 2026-09-0914
  7. 2026-09-1013
  8. 2026-09-1312
  9. 2026-09-1512

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: 7 match patterns.

  • https://www.amazon.co.jp/*
  • https://item.rakuten.co.jp/*
  • https://books.rakuten.co.jp/*
Show the remaining 4
  • https://store.shopping.yahoo.co.jp/*
  • https://shopping.yahoo.co.jp/*
  • https://www.yodobashi.com/*
  • https://pricetracker-jp.qontan.workers.dev/*
  • Act on the current tab, but only after you click it activeTab
  • Schedule work to run later alarms
  • Add items to the right-click menu contextMenus
Show the remaining 2
  • Show you notifications notifications
  • 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

qontan publishes 2 listings we track, 32 users between them.

  1. DiffSpot — Web Page Change Monitor qontan · Productivity · Tools · published 2026-03-23 20 users

Like this one

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

  1. EC価格比較 - ネット通販5サイトの最安値をワンクリックで比較検索 Describes nearly the same job, smaller audience 74 users
  2. 自動価格比較／ショッピング検索（Auto Price Checker） Describes nearly the same job, with an established audience 20k users ★ 3.6
  3. 価格比較・最安値チェック | Amazon 楽天 Yahoo!ショッピング - カカクロ Describes nearly the same job, smaller audience 127 users
  4. Cross Searcher Describes nearly the same job, smaller audience 32 users
  5. 価格サーチ君 Describes nearly the same job, smaller audience 96 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?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

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.