先生
毎日少しずつ勉強すると、覚えやすくなります。
Keep the Japanese words you meet while reading
A Japanese vocabulary tracker for real reading
Rolko helps you explore Japanese words in supported text and webpages, then keep useful vocabulary in one place. Basic word lookup is free. Saving new words requires a paid plan; previously saved words remain reviewable on Free. Try the Japanese reading demo below to inspect meanings and word states. Demo changes stay on this page and do not transfer to your account.
Start learning
The web app works in every modern browser. No extension required.
Interactive product proof
Try Japanese vocabulary states in real reading text
This interactive Japanese sample uses Rolko’s shared transcript and word-state components. Demo changes stay local to the page; a signed-in paid plan is needed to save new words for later review.
Reading workspace
毎日使える日本語
Tap or hover a word for its pronunciation and meaning. Mark it as learned or learning.
Word Coverage
Learned: 25%Learning: 25%New: 50%
Product workflow
Move from lookup to lasting vocabulary
Understand a word in context
Inspect a reading and English meaning while working through supported Japanese text.
Keep a useful word
With a paid plan, save new vocabulary you want to revisit instead of collecting every word you encounter.
Return for review
Use Rolko’s spaced-repetition review flow for saved words while continuing to read on supported surfaces.
Real plan prices
Choose the plan that fits your learning
Compare features and current prices below.
Starter
Light daily learning$3.99/month
Or $2.42/month on annual billing, billed $29/yr.
- 100 translations per day
- 10 Japanese audio sentences per day
- Save 5 new words per day
- Spaced-repetition and pronunciation review
Plus
Recommended$6.99/month
Or $4.08/month on annual billing, billed $49/yr.
Everything in Starter, plus:
- Unlimited word saving
- Higher translation and Japanese audio limits
- Built for consistent daily learning
Pro
Serious learners$14.99/month
Or $8.25/month on annual billing, billed $99/yr.
Everything in Plus, plus:
- 1,000 AI translations every 5 hours
- 1,500 Japanese audio characters per day
- Priority feature requests
- Generate interactive subtitles from uploaded audio or video (Coming soon)
- Interactive subtitles for Douyin and Bilibili (Coming soon)
Related Rolko answers
Continue with the workflow you need
What is Rolko, and when should you use it?
Rolko is a language-learning web app and browser extension for interactive subtitles, webpage text, vocabulary tracking and spaced-repetition review.
A LingQ alternative for Japanese webpage reading
Compare Rolko with LingQ for Japanese reading. Try Rolko’s supported webpage lookup and word-state demo, then check the free and paid plan boundaries.
A Japanese popup dictionary for the pages you choose
Read selectable Japanese webpage text with Rolko’s desktop browser extension. Lookup is free; saving new words requires a paid plan. Previously saved words remain reviewable.
Common questions
What to know before you start
Is Japanese word lookup free?
Yes. Basic lookup is free. Saving new words requires a paid plan; previously saved words remain reviewable on Free. Check current plan details before subscribing.
Does this demo save words to my account?
No. The interactive sample keeps changes on this page only. Sign in and choose a plan that includes new-word saving to keep vocabulary in Rolko.
Can Rolko read Japanese text inside manga images?
No. Rolko does not provide OCR for image or video pixels. Use supported normal text instead.
Can I use the webpage popup on my phone?
The webpage-hover extension is for supported desktop Chromium browsers. Rolko’s web app has separate mobile reading and vocabulary workflows.