Learn languages with Rolko
AI-powered web app + browser extension

Learn languages from YouTube, the web, and Chinese Netflix subtitles

Turn supported subtitles, transcripts, and selectable webpage text into interactive practice with instant pronunciation and meaning. Start free with reading and limited translation; Starter adds new-word saving so you can build a spaced-repetition review deck.

Create your free account

Free reading, lookup, and limited translation. No credit card required. See plans and pricing.

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

Watch YouTube or Netflix, learn from context

Install the desktop extension to make supported Chinese subtitles interactive — tap or hover a word for instant pinyin and meaning. On Starter or above, save it to your vocabulary.

YouTubeGB
后来发现这座城市想象中温柔
0:00 / 0:15
Extension overlay — tap or hover a word to explore

Import transcripts from YouTube, Missevan, Spotify & more

Paste a supported URL or text and start reading instantly. Tap or hover a word for pronunciation and meaning. On Starter or above, mark it as learned or learning and review it in the app.

Reading workspace

中文秘诀

Tap or hover any word for pinyin and meaning, then save it as learned or learning.

Word Coverage

Learned: 50%Learning: 20%New: 30%
主持人
中文多久
嘉宾
大概三年但是每天练习
主持人
什么好的学习方法
嘉宾
觉得中文有用

Review with SRS

Spaced-repetition surfaces the right words at the right time. Short daily sessions that actually stick.

Review

Vocab Review

加油
今天比赛重要大家一起加油

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
每天
měitiānevery day; dailyStatuslearnedNext reviewIn 4 months
努力
nǔlìto work hard; diligentStatuslearningNext reviewIn 3 months
进步進步
jìnbùprogress; to make progressStatuslearnedNext reviewIn 3 months
有趣
yǒuqùinteresting; fascinatingStatuslearningNext reviewIn 2 months
语言語言
yǔyánlanguageStatuslearningNext reviewIn 2 months
城市
chéngshìcity; townStatuslearnedNext reviewIn 2 months
明白
míngbaito understand; clearStatuslearningNext reviewIn 2 months
工作
gōngzuòwork; job; to workStatuslearnedNext reviewIn 1 month
非常
fēichángvery; extremelyStatuslearnedNext reviewIn 1 month
喜欢喜歡
xǐ huanto like; to be fond ofStatuslearningNext reviewIn 4 weeks
朋友
péngyoufriendStatuslearnedNext reviewIn 3 weeks
学习學習
xuéxíto study; to learnStatuslearnedNext reviewIn 3 weeks

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/learnchinese/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
Jun 9
跑腿
run errands / errand runner / delivery person
Jun 7
副总
Vice president / Deputy General Manager
Jun 12
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 100
500
Top 500
1k
Top 1k
2k
Top 2k
3k
Top 3k
4k
Top 4k
5k
Top 5k
Top 500current tier
312 / 500 mastered
62% 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

Read text and explore supported subtitles and webpages for pronunciation and meaning. Use limited AI translation for free, then upgrade to Starter when you want to save new vocabulary and build a spaced-repetition review deck.

Works with supported Chinese subtitles on YouTube and Netflix, plus Chinese text on supported websites.

No credit card required.

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

Hover selectable Chinese text on supported websitesSupported Chinese subtitles on YouTube and Netflix, plus Chinese text on supported websitesPronunciation + meaning instantlySpaced-repetition reviewsCancel paid plans anytime