時
間
学
習
記

Chrome Extension · Free

YourJapanesehours,tracked
silently

It quietly detects the Japanese sites you already use and times every minute in the background — so your immersion finally has a number.

Add to Chrome — freeSee the dashboard
Zero
setup required
100%
passive tracking
Free
forever
scroll

How It Works

Three steps. Then you forget it exists.

No timers to start, no sessions to log. The whole point is that you never think about it.

01

Install

Add Japanese System to Chrome in two clicks. No account, no onboarding, no permissions to your browsing data.

入
日
Japanese System
Track your Japanese study time
FREE
4.9  ·  2,400 ratings
Add to Chrome
Chrome Web Store · Verified publisher · No data collected
02

Study

Open WaniKani, BunPro, Netflix — anything you already use. The extension silently starts the clock the moment the page loads.

学
WaniKani
BunPro
Netflix
00:24:17
Tracking silently
03

Watch hours add up

Open the dashboard any time to see your immersion streaks, daily breakdowns, and category totals — built up entirely in the background.

積
Today
3h 42m
14-day streak
M
T
W
T
F
S
S
Netflix
2h 03m
WaniKani
1h 29m
BunPro
10m

Features

Built to disappear into your study.

Every feature exists to stay out of the way. You learn; it keeps the books.

無
◎

Zero setup

Install once. It starts working the moment you visit a tracked site. No account, no config.

間
⏸

Smart 1-min pause

Step away from your desk — it pauses. Move the mouse — it resumes. Your hours stay honest.

分
⊞

Per-tab sessions

Every open tab runs its own independent clock. Open a link in a new tab without disrupting your main session.

感
⊛

Auto site detection

Recognizes WaniKani, BunPro, Migaku, Netflix, YouTube, and Satori Reader automatically — no manual tagging.

記
▦

Deep analytics

Daily and weekly charts, category breakdowns, streaks, and study insights. All computed locally.

真
◈

Always accurate

Inactivity detection ensures your tracked hours reflect actual study time — not time spent away.

時

A day in your study life

Every site. Every minute. All counted.

0h 00m

studied today

09:15WaniKani
10:40BunPro
13:05Migaku
19:22Netflix
21:55YouTube
23:10Your site
00:0006:0012:0018:0024:00
WaniKani1.4h
BunPro0.8h
Migaku1.1h
Netflix2.1h
YouTube0.5h
Your site
scroll to scrub

Dashboard

Your immersion, finally visible.

Charts, streaks, and session breakdowns — all built from hours you never had to track.

日
Japanese System
Today
This Week
All Time
Today
3h 42m
+18m vs yesterday
Day Streak
14 days
Personal best
This Week
18h 30m
Goal: 20h
Daily Study — Last 7 Days
Mon
Tue
Wed
Thu
Fri
Sat
Sun
By Category
Netflix
5h 45m
WaniKani
4h 20m
BunPro
3h 15m
YouTube
2h 30m

Supported Sites

Every place you study, already covered.

More sites added regularly. Request yours in Discord.

日
漢
WaniKani
文
BunPro
見
Migaku
映
Netflix
動
YouTube
読
Satori Reader
＋
Your site
WaniKaniBunProMigakuNetflixYouTubeSatori Reader+ Your site+ more
学

Start Tracking

Study anywhere. Japanese System notices.

Every tab. Every site. Every minute — counted silently, so you can focus on what actually matters.

Add to Chrome — free

Chrome Web Store · Zero permissions to your browsing data

Join the Discord community