Vocab
Common learning
You understand a word when you look it up — then can't recall it a few days later.
With Komivo
Save the word with the sentence you met it in. Review later, and confirm you can recall it in a new question.
Don't stop at understanding.Turn it into English you can use next.
Vocabulary and writing. Practise what you want to remember or fix, review it later, and confirm it stuck with a Test.
Komivo
Vocab
Writing
Choose Vocab or Writing for your goal. What you practise is saved for later review and Test.
Before / After
Understanding once doesn't meanyou can use it next.
With Komivo, you practise what you want to remember or fix — then come back to it later.
Writing
Common learning
You read a corrected sentence and stop there. Without knowing why it changed, you stall on the same spot next time.
With Komivo
Choose a point to fix and rewrite it yourself. Review later, and confirm you can write it in a new question.
Choose an app
Start from the problem you have now.
Start free with the app that matches the problem you have now.
Komivo VocabWords you thought you learned slip away
Save them in context and recall them later
Try VocabKomivo WritingCorrections don't make you able to write it yourself
Choose a point and rewrite it yourself
Try WritingHow it works
How Vocab and Writing work
Pick an app and watch the real flow.
From word
Word or phrase
Meaning
Start from a single word — get a natural example sentence.Generate example
Example sentence
Example translation
Save card
- Review
- Practise recalling it in the context you saved.
- Test
- Confirm retention with new questions built from your own learning content.
What you practise stays in each app. Later you can review it and confirm it stuck with new questions.
Use cases
Built for these moments
From work, study, and exams — where English usually stalls.
Vocab
Keep words from work, class, and reading ready to use later.
- Words looked up in email or documents
- Words from lectures, papers, or reading
- Words you want to keep for exams or daily study
Writing
Centered on university entrance-exam writing — fix and practise what you wrote.
- Free composition
- Japanese-to-English translation
- IELTS, TOEFL, and GRE
Compare
How Komivo is different
It doesn't end when you get an answer or a correction — practice continues.
What to compare
Typical AI chat
One-off correction
Video / subtitles
Komivo
What to compareGet an answer or explanation on the spot
Typical AI chatSupported
One-off correctionSupported
Video / subtitlesPartial
KomivoSupported
What to compareRedo it yourself
Typical AI chatPartial
One-off correctionPartial
Video / subtitlesPartial
KomivoSupported
What to compareSave what you want to remember or fix
Typical AI chatNot supported
One-off correctionNot supported
Video / subtitlesNot supported
KomivoSupported
What to compareReview later
Typical AI chatNot supported
One-off correctionNot supported
Video / subtitlesNot supported
KomivoSupported
What to compareConfirm with new questions from your learning (Test)
Typical AI chatNot supported
One-off correctionNot supported
Video / subtitlesNot supported
KomivoSupported
Review means recalling what you saved and practising it again later. Test checks whether it stuck, using new questions built from your own learning.
LEARN
English learning tips
Ideas and practical tips to help you build lasting English skills.
英単語が覚えられない原因は？研究に基づく効率的な覚え方
英単語が覚えられない原因と、効率的な覚え方・復習法の基礎。
Read articlePricing
Choose the plan that fits
Start free. Continue with Vocab Pro or Writing Pro.
Monthly only. No annual plan.
Free
$0.00 USD
Start free
- Free Practice on Vocab and Writing
- One Test per app from your learning content
- No card required
Vocab Pro
$6.99 USD/month
Continue on the app you need
- Pro for that app
- Higher Practice limits
- 3 Tests per day on that app
Writing Pro
$12.99 USD/month
Continue on the app you need
- Pro for that app
- Higher Practice limits
- 3 Tests per day on that app
Tax included. Displayed price is the total customer-facing amount.
Learning content is managed per app and does not move automatically.
- Free signup — no card required
- Monthly billing
- After cancel, Pro continues until the paid period ends
Don't stop at understanding.Turn it into English you can use next.
Choose the right app and start free.