- Sentences
- Audio
- Images
Free JLPT vocabulary app · N5 to N1
Master JLPT Vocabulary in Real Sentences
Every word comes with a natural example sentence, furigana you control, native audio and an illustration. Smart Review keeps bringing words back until you truly know them.
8,090+ words, JLPT N5 to N1
Example sentence on every word
Furigana you control
Native audio, male or female voice
Smart Review until mastered
Community and progress tracking
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JLPT N5 to N1
8,090+ JLPT words. Every level is ready.
Each level is a complete, curated deck, split into topic categories so you can study one theme at a time and see your progress per topic. Every single word has an example sentence, native audio and an illustration.
- Sentences
- Audio
- Images
- Sentences
- Audio
- Images
- Sentences
- Audio
- Images
- Sentences
- Audio
- Images
Study by topic
- Food & Drinks
- Family & Relationships
- Time & Date
- Travel & Places
- Nature & Weather
- School & Work
- Expressions & Greetings
- Keigo & Polite Expressions
- +21 more topics
Full word lists, sentences and audio unlock inside the app after a free sign-up.
What's on every card
Not just a word and a translation. Context on every card.
Most vocabulary apps stop at the word. KotoNexa shows you how it is read, how it sounds and how it is used, all on one card.
Word with furigana
Kanji with readings above, the way real Japanese prints them.
Natural example sentence
A real sentence with English for better context.
Native audio
Word and sentence read aloud, in a male or female voice.
An illustration
A picture for every word gives your memory a second hook.
Optional romaji
Turn romaji on while you learn kana, then switch it off.
Status and category
See if a word is New, Improving or Learned, and its topic.
Your cards, your rules
Flashcard settings most apps don't offer
Every learner reads Japanese differently. KotoNexa lets you tune each card to the exact level of help you need, and take that help away as you grow.
Hide furigana for your level
Keep readings for harder kanji, but hide them for the level you are studying, so you actually practise reading.
Furigana on or off
Show readings above every kanji, or turn them off completely when you want a challenge.
Choose your mastery bar
Decide how many correct answers, from 1 to 10, it takes before a word counts as learned. Strict or relaxed, it's your call.
Male or female voice
Pick the native voice you prefer for words and sentences, or mute sound entirely.
Romaji toggle
A safety net for absolute beginners that you can switch off the moment you are ready.
Reveal on tap
Keep the answer hidden until you tap, and choose whether a tap reveals the meaning or the word, so you practise recall as well as recognition.
Swipe to answer
Swipe right for "I know it", left for "not yet". Use finger gestures or on-screen buttons.
Sentences and images on or off
Study with full context, or strip the card down to the word for a quick drill.
Daily word target
Set how many words you want each day. KotoNexa builds your deck around it.
Smart Review
Words keep coming back until you truly know them
Swipe right when you know a word, left when you don't. KotoNexa tracks every answer and moves each word through five stages, so you spend time on what you're about to forget, not on what you already know.
New
You haven't seen this word yet.
Started
You've answered it once.
Improving
Seen several times, still building.
Finalizing
One correct answer from mastery.
Learned
You hit your mastery bar.
Every daily deck is balanced for you
New 30%Started 30%Improving 20%Finalizing 20%
Fresh words keep you moving forward, while words you have started, are improving on or are one step from mastering come back at the right moment. If one stage runs out, the deck fills from the next one, so you always get a full session.
Hard words mode
Drill only the words you keep missing, so weak spots get extra attention.
Still learning mode
Review only words you have started but not mastered yet, to push them over the line.
Your mastery bar
Set how many correct answers make a word "learned". Raise it for exam-level confidence.
Stay consistent
Learn together. See yourself grow.
Motivation fades when you study alone and can't see progress. KotoNexa gives you both a community and a clear picture of how far you've come.
A study group that lives inside the app
Ask about a word you don't understand, share a milestone or encourage someone who's stuck. No separate forum, no switching apps.
- Ask vocabulary and grammar questions
- Share progress and rank-ups
- Announcements and study tips
- A friendly space with clear community guidelines
Progress you can actually see
Set a daily target and watch it fill up. Streaks, weekly charts and per-word status show exactly where you stand for each JLPT level.
- Daily word target and streaks
- Weekly activity chart
- Learned-words list per level
- 13 ranks and badges, from Minarai to Kamisama
How KotoNexa Works
1. Choose Goal
Pick your JLPT level and a daily word target.
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2. Learn Words
Study illustrated cards with sentences, furigana and audio.
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3. Review Smartly
Swipe to answer. Words return until you master them.
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4. Track Progress
Watch streaks, charts and learned words grow.
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5. Rank Up
Climb 13 ranks and celebrate with the community.
Why KotoNexa
Built for the JLPT, not for every subject at once
General flashcard tools are powerful but leave the content and setup to you. KotoNexa does that work for you, so you can open the app and start learning.
| KotoNexa | Typical flashcard app | |
|---|---|---|
| Ready-made JLPT decks | Yes. 8,090+ words, N5 to N1 | Often build or import your own |
| Example sentence on every word | Yes, with translation | Sometimes, varies by deck |
| Furigana control | On, off, or hidden only for your current level | Usually all-or-nothing |
| Native audio | Every word and sentence, male or female voice | Varies, often missing |
| Illustrations | On every card | Rare |
| Built-in community | Yes, the Community Garden | Usually a separate forum |
| Price | Free, always | Free to subscription |
FAQ
Questions learners ask before signing up
What is KotoNexa?
KotoNexa is a Japanese vocabulary app built only for JLPT preparation. You study illustrated flashcards for N5 to N1, each with a natural example sentence, furigana you can control, and native audio. A smart review system keeps bringing words back until you have answered them correctly enough times to count as learned.
Is KotoNexa free?
Yes. KotoNexa is completely free: every JLPT level, every sentence, all audio, the community and progress tracking. You only need a free account to start.
Which JLPT levels are covered?
All five levels are ready, with 8,090+ words in total: N5 (713), N4 (651), N3 (2,071), N2 (1,744) and N1 (2,911). Every word includes an example sentence, audio and an illustration.
How is KotoNexa different from other flashcard apps?
Most flashcard apps give you a word and a translation, or ask you to build your own deck. KotoNexa gives you ready-made JLPT decks where every card has a real sentence, furigana you can switch on, off or hide only for your current level, romaji for beginners, a choice of male or female native voice, and an illustration. You also decide how many correct answers it takes to master a word.
Can I choose what to study?
Yes. Pick one or more JLPT levels, then choose topic categories inside each level, or study all words at once. Every category shows how many of its words you have learned, so you always know what's left.
Does KotoNexa use spaced repetition?
KotoNexa uses a mastery-based Smart Review system. Each word moves through stages (New, Started, Improving, Finalizing, Learned) as you answer it. Every daily deck mixes new words with words at each stage, and a word keeps coming back until you have answered it correctly the number of times you chose. Focus modes let you drill only hard words or only words still in progress.
Our story
Why we built KotoNexa free for every JLPT learner
We couldn't find a JLPT vocabulary app with proper furigana, real sentences, audio and a community in one place, so we built it, and made it free for everyone.
Ready to Start Your JLPT Journey?
Free to start, free forever. Join our early learners and study your first deck in minutes.
