Ext Ops Panel
Open dashboard

ISJuku App

Chrome Web Store listing by R4HS Inc.

A Chrome extension with 3 users, barely installed. Audience over the last 30 days: unchanged.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 1 screenshot

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

Users
3
Rating
not rated yet
Users, last 30 days
Unchanged
Version
0.1
Updated in the store
2014-08-09
Published
2014-08-09
Manifest
V2
Browser access
2 permissions

How it has moved

Users
unchanged since 03.10
2-4 · 11 readings
  1. 2026-10-082
  2. 2026-10-093
  3. 2026-10-102
  4. 2026-10-133
  5. 2026-10-174
  6. 2026-10-183
  7. 2026-10-214
  8. 2026-10-223
  9. 2026-10-234
  10. 2026-10-243
  11. 2026-11-013
Users
unchanged since 01.09
2-4 · 23 readings
  1. 2026-09-013
  2. 2026-09-034
  3. 2026-09-054
  4. 2026-09-073
  5. 2026-09-084
  6. 2026-09-103
  7. 2026-09-154
  8. 2026-09-173
  9. 2026-09-204
  10. 2026-09-213
  11. 2026-09-274
  12. 2026-09-283
  13. 2026-10-082
  14. 2026-10-093
  15. 2026-10-102
  16. 2026-10-133
  17. 2026-10-174
  18. 2026-10-183
  19. 2026-10-214
  20. 2026-10-223
  21. 2026-10-234
  22. 2026-10-243
  23. 2026-11-013

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

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Declares http://isjuku.jp/
  • Declares webview

The full permission history for this extension

What changed recently

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

The publisher

R4HS Inc. publishes 2 listings we track, 9 users between them.

  1. ねこでもできる割引計算 R4HS Inc. · published 2014-08-09 6 users

Like this one

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

  1. Answer input for Tae Kim's guide to Japanese Describes nearly the same job, smaller audience 4 users
  2. JVS Assistant Describes nearly the same job, smaller audience 7 users
  3. JPDB Immersion Kit Examples Describes nearly the same job, smaller audience 47 users ★ 5.0
  4. WaniKani Kanji Highlighter Describes nearly the same job, smaller audience 850 users ★ 4.7
  5. WaniKani Review Notifier Describes nearly the same job, smaller audience 2 users (last published figure)

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.

Want this mark on your extension in our catalog?

Verify that you are its author and you can show this mark on the card, with live banners for your site and README. How verification works

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

Connect it in a minute See what the panel does
Add a badge to your README or site

The badge shows the audience and rating from our last pass over the store and links back to this page.

Users and rating on Ext Ops Panel

Markdown

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

HTML

<a href="https://extops.dev/extensions/pipofjakeajglkllgajifbbmnoakjbnk"><img src="https://extops.dev/extensions/pipofjakeajglkllgajifbbmnoakjbnk/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 2026-10-24. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built