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Japanese System

Chrome extension by sheru.jp · Productivity · Education

A Chrome extension in Productivity · Education with 24 users, barely installed.

Specific sites only: 1 match pattern.

What the developer says, and 6 screenshots

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

Users
24
Rating
5.0 (2 ratings)
Users, last 17 days
+5
Rating, last 30 days
Not watched long enough to say
Version
1.0.1
Updated in the store
2026-09-14
Published
2026-05-15
Manifest
V3
Browser access
5 permissions, 1 site pattern

How it has moved

Users
+5 since 31.08
19-26 · 8 readings
2026-09-04: released 1.0.02026-09-05: released 1.0.1
  1. 2026-08-3119
  2. 2026-09-0221
  3. 2026-09-0423released 1.0.0
  4. 2026-09-0622
  5. 2026-09-0724
  6. 2026-09-0826
  7. 2026-09-1525
  8. 2026-09-1624
Rating
unchanged since 31.08
reviewsrating 5.00 · 8 readings
2026-09-04: released 1.0.02026-09-05: released 1.0.1
  1. 2026-08-31reviews2rating5.00
  2. 2026-09-02reviews2rating5.00
  3. 2026-09-04reviews2rating5.00released 1.0.0
  4. 2026-09-06reviews2rating5.00
  5. 2026-09-07reviews2rating5.00
  6. 2026-09-08reviews2rating5.00
  7. 2026-09-15reviews2rating5.00
  8. 2026-09-16reviews2rating5.00
Users
+5 since 31.08
19-26 · 8 readings
2026-09-04: released 1.0.02026-09-05: released 1.0.1
  1. 2026-08-3119
  2. 2026-09-0221
  3. 2026-09-0423released 1.0.0
  4. 2026-09-0622
  5. 2026-09-0724
  6. 2026-09-0826
  7. 2026-09-1525
  8. 2026-09-1624
Rating
unchanged since 31.08
reviewsrating 5.00 · 8 readings
2026-09-04: released 1.0.02026-09-05: released 1.0.1
  1. 2026-08-31reviews2rating5.00
  2. 2026-09-02reviews2rating5.00
  3. 2026-09-04reviews2rating5.00released 1.0.0
  4. 2026-09-06reviews2rating5.00
  5. 2026-09-07reviews2rating5.00
  6. 2026-09-08reviews2rating5.00
  7. 2026-09-15reviews2rating5.00
  8. 2026-09-16reviews2rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing 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: 1 match pattern.

  • https://obsmjjiwpcouabzcckvj.supabase.co/*
  • See the address and title of every tab you have open tabs
  • Schedule work to run later alarms
  • Tell whether you are away from the computer idle
Show the remaining 2
  • Show you notifications notifications
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.0.1
  2. Version 1.0.0 · Asked for fewer permissions (6, was 7)

What changed recently

  1. Store description rewritten
  2. Released version 1.0.1 (was 1.0.0)
  3. Package size changed
Show the remaining 3
  1. Asked for fewer permissions (6, was 7)
  2. Supported languages changed (1 → 2)
  3. Released version 1.0.0 (was 0.1.12)

The publisher

sheru.jp. Listed website: japanesesystem.com.

Like this one

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

  1. jp343 Track Your Japanese Immersion Describes nearly the same job, smaller audience 164 users ★ 5.0
  2. Osmolog - Language Immersion Tracker Describes nearly the same job, smaller audience 123 users ★ 5.0
  3. Language Learning Time Tracker Describes nearly the same job, smaller audience 19 users
  4. Japanese Reading Tracker Describes nearly the same job, smaller audience 4 users
  5. JapaneseJourney Describes nearly the same job, smaller audience 10 users ★ 5.0

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.

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.