Rolko
Web app + browser extension · Learn Korean from real content

Turn real Korean into lessons you remember

Explore words while you watch, browse, or read. Keep the ones you want to remember.

Free includes lookup, reading, and limited translation. Saving new words starts with Starter.

Start learning Korean

No credit card. Continue with Google or email. Pricing

Interactive subtitle demo

Learn with YouTube or Netflix

YouTubeGB
매일 조금씩 공부하면 기억하기 쉬워요.★
0:00 / 0:15
↑Extension overlay — tap or hover a word to explore

Hover a word to see its meaning. Save new words and review them later.

The web app works on mobile. The browser extension is for desktop.

See how learning Korean works

This example uses Korean content with English meanings.

Reading workspace

매일 쓰는 한국어

Tap or hover a word for its pronunciation and meaning. Mark it as learned or learning.

Word Coverage

Learned: 20%Learning: 20%New: 60%
선생님
매일 조금씩 공부하면 기억하기 쉬워요.

Review with spaced repetition

The right words return at the right time, in short daily sessions that stick.

Review with spaced repetition

Vocab Review

매일
매일 조금씩 공부하면 기억하기 쉬워요.

Your vocabulary at a glance

Find every word you save, filter by status, and see its pronunciation, meaning, and examples.

5 words
쉽다
swipda
to be easyStatuslearningNext reviewIn 2 weeks
기억하다
gieokhada
to rememberStatuslearningNext reviewIn 1 week
공부하다
gongbuhada
to studyStatuslearningNext reviewIn 1 week
조금씩
jogeumssik
little by littleStatuslearningNext reviewIn 1 week
매일
maeil
every dayStatuslearnedNext reviewIn 1 week

Keep track of your progress

See how many words you know, your review streak, daily activity, and each word’s mastery.

rolko.xyz/app/stats
Saved vocab
10,200
7,500 learned
2,700 learning
Learned
7,500
+12 today
+48 this week
Learning
2,700
−2 back to learning today
−8 back this week
Review queue
0
Recommended today: 0
Streak
47 days
Best 61
78 active days
Vocabulary progress
7,500 learned · 2,700 learning · 10,200 total
Learned 73.5%Learning 26.5%
Movement
today
+12 learned
-2 back to learning
this week
+48 learned
-8 back to learning
This month
+120 learned
-18 back to learning
This year
+7500 learned
+10,200 saved
Words moved to learned (last 90 days)
Review activity
Daily reviews · Accuracy trend
Daily reviews
1,227 vocab
30 days
Jun 1
58 total
Jun 2
69 total
Jun 3
44 total
Jun 4
78 total
Accuracy trend
Right-answer % per day, 30 days · rest days skipped
92% avg
Avg
92%
High
93%
Low
91%
Due now
Words due for review right now.
Nothing is due right now.
Weak
Still learning — review interval under 7 days.
조금씩
little by little
Oct 29
공부하다
to study
Oct 30
기억하다
to remember
Oct 31
Mastered
Graduated to learned status.
매일
every day
Oct 28

Make real progress

Learn from real content while watching, browsing, and reading

Discover real Korean words. Save them, review them, remember them.

No credit card required.