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ISJuku App

Chrome Web Store listing by R4HS Inc.

A Chrome extension with 3 users, barely installed.

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 14 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 01.09
3-4 · 7 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. 2026-09-143
Users
unchanged since 01.09
3-4 · 7 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. 2026-09-143

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

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 3 users
  3. JPDB Immersion Kit Examples Describes nearly the same job, smaller audience 45 users ★ 5.0
  4. WaniKani Kanji Highlighter Describes nearly the same job, smaller audience 854 users ★ 4.7
  5. Hachidori Describes nearly the same job, smaller audience 2 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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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.