主持人
你学中文多久了？
Web app + browser extension · Chinese, Japanese, Korean, and English
Learn languages from content you already enjoy
Read supported text, look up words in context, and build lasting vocabulary across Rolko’s available study languages. Start free with reading and limited translation; Starter adds word saving and spaced-repetition review.
Study languages available now
- Chinese中文
- Japanese日本語
- Korean한국어
- English
Try Rolko free
No credit card. Continue with Google or email. See plans and pricing.
The web app works on mobile. The browser extension is for desktop.
Video subtitle demo · Chinese, Japanese, Korean, and English
Make video subtitles interactive on YouTube or Netflix
This demo shows the currently available Chinese, Japanese, Korean, and English subtitle workflow on supported watch pages. The same extension also supports webpage lookup in Chinese, Japanese, Korean, and English. Tap or hover a word for its meaning and available pronunciation details, then save it to your vocabulary on Starter or above.
For desktop browsers
Install browser extensionGB
Search
Create
学中文说汉语听读
后来我发现，这座城市比想象中更温柔。★
0:00 / 0:15
↑Extension overlay — tap or hover a word to explore
■ learned■ learning■ new word
Bring real content into the web app
Paste supported text in Chinese, Japanese, Korean, and English, or import a transcript when your study mode and source support it. Tap or hover a word for its meaning and available pronunciation details. On Starter or above, mark it as learned or learning and review it in the app.
YouTube
Available captions in Chinese, Japanese, and Korean study modes.
Missevan
Synchronized scripts for Chinese study mode.
Spotify
Podcast transcripts for Chinese study mode.
Paste anything
Supported text in Chinese, Japanese, Korean, and English.
Product example shown below: Chinese → English transcript study.
Reading workspace
学中文的秘诀
Tap or hover any word for pinyin and meaning, then save it as learned or learning.
Word Coverage
Learned: 50%Learning: 20%New: 30%
嘉宾
大概三年了，但是每天都要练习。
主持人
有什么好的学习方法吗？
嘉宾
我觉得看中文剧最有用，边看边学。
Review with SRS
Spaced-repetition surfaces the right words at the right time. Short daily sessions that actually stick.
Review
Vocab Review
加油
今天的比赛很重要，大家一起加油吧！
Your vocabulary, at a glance
Every word you save lands here. Filter by status, search instantly, and see pronunciation, meaning, and example sentences.
12 words
| Sentences | |||||||
|---|---|---|---|---|---|---|---|
每天 | měitiān | every day; daily | Statuslearned | Next reviewIn 4 months | 2026-01-12 | ||
努力 | nǔlì | to work hard; diligent | Statuslearning | Next reviewIn 3 months | 2026-01-11 | ||
进步進步 | jìnbù | progress; to make progress | Statuslearned | Next reviewIn 3 months | 2026-01-10 | ||
有趣 | yǒuqù | interesting; fascinating | Statuslearning | Next reviewIn 2 months | 2026-01-09 | ||
语言語言 | yǔyán | language | Statuslearning | Next reviewIn 2 months | 2026-01-08 | ||
城市 | chéngshì | city; town | Statuslearned | Next reviewIn 2 months | 2026-01-07 | ||
明白 | míngbai | to understand; clear | Statuslearning | Next reviewIn 2 months | 2026-01-06 | ||
工作 | gōngzuò | work; job; to work | Statuslearned | Next reviewIn 1 month | 2026-01-05 | ||
非常 | fēicháng | very; extremely | Statuslearned | Next reviewIn 1 month | 2026-01-04 | ||
喜欢喜歡 | xǐ huan | to like; to be fond of | Statuslearning | Next reviewIn 4 weeks | 2026-01-03 | ||
朋友 | péngyou | friend | Statuslearned | Next reviewIn 3 weeks | 2026-01-02 | ||
学习學習 | xuéxí | to study; to learn | Statuslearned | Next reviewIn 3 weeks | 2026-01-01 |
Keep track of your progress
See exactly how many words you know, your review streak, daily activity, and where each word sits on the mastery scale.
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
142
Recommended today: 100
~2 days at 100/day
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 and accuracy trend
Daily reviews
1,227 vocab · 404 tone
30d
Jun 1
58 total
Jun 2
69 total
Jun 3
44 total
Jun 4
78 total
Accuracy trend
Right-answer % per day, 30d · rest days skipped
92% avg
Avg
92%
High
93%
Low
91%
Due now
Words due for review right now.
定位
positioning / orientation / locate
惨遭
suffer / fall victim to / be subjected to
昏暗
dim / dark / gloomy
Weak
Still learning — review interval under 7 days.
具尸
corpse / dead body / Corpse
跑腿
run errands / errand runner / delivery person
副总
Vice president / Deputy General Manager
Mastered
Graduated to learned status.
女主
heroine / female protagonist / female lead
跑出
run out / escape / break out
花店
flower shop / florist / flower store
Tone practice
Master tones from the most-common characters up
94% accuracy
✓
Top 100500
Top 5001k
Top 1k2k
Top 2k3k
Top 3k4k
Top 4k5k
Top 5kTop 500current tier
312 / 500 mastered62% completeNext: Top 1000
Reviews
8,780
8,240 right
Accuracy
94%
540 wrong
Due today
18
5 new
Active
188
in rotation
Start learning for free
Learn from real content while watching and browsing
Choose from the supported study languages, read real text, and explore words for their meaning and available pronunciation details. Use limited translation for free, then upgrade to Starter when you want to save new vocabulary and build a spaced-repetition review deck.
The web app and desktop extension support page-text learning in Chinese, Japanese, Korean, and English. Video-subtitle support is available for Chinese, Japanese, Korean, and English.
No credit card required.
Free includes lookup, reading, and limited translation. Saving new words starts with Starter.
✓Multi-language web app: Chinese, Japanese, Korean, and English✓Browser extension: Chinese, Japanese, Korean, and English✓Current video subtitle demo: Chinese, Japanese, Korean, and English✓Meanings + available pronunciation details✓Spaced-repetition reviews✓Cancel paid plans anytime