日本語を育てる
JIVX
Stop studying Japanese. Start speaking it.
Start Practicing FreeYou understand Japanese. But can you produce it?
- You know the grammar rules but can't form sentences on the spot.
- You understand spoken Japanese but freeze when it's your turn to talk.
- You've studied for years but still can't hold a basic conversation.
- Your answer was correct, but the app marked it wrong because it expected one exact phrase.
JIVX is built for you if…
The textbook learner
You know the grammar rules but can't use them on the spot.
The listener
You understand anime and podcasts but freeze when it's your turn to speak.
The test-taker
You're studying for JLPT but need output practice, not more flashcards.
The returner
You studied Japanese years ago and want to rebuild your speaking confidence.
Three steps. Every day.
Read the prompt
An everyday situation in English. Ordering coffee. Asking for directions. Apologizing to a coworker.
Write or speak in Japanese
Type with your keyboard or speak with your voice. No multiple choice. No word banks. Generate it yourself.
Get AI feedback instantly
AI evaluates your intent, grammar, vocabulary, and tone. There's no single correct answer — express yourself naturally.
Your path from first words to fluency
Five levels. 22,786 sentences. One journey.
First Words
Order coffee. Ask for directions. Introduce yourself.
Finding Your Voice
Share experiences. Express opinions. Make plans with friends.
Breaking Through
Discuss abstract topics. Navigate unfamiliar situations.
Speaking Naturally
Debate nuanced topics. Express complex emotions fluently.
Mastery
Say anything you think, the way a native would.
Your answer was right. The app just didn't know it.
Most apps match against one expected answer. JIVX understands what you meant.
京都に一度行ったことがあります
Expected: 京都に一回行ったことがあります
京都に一度行ったことがあります
Good use of the ~たことがある experience pattern! Grammar is solid. Consider using 一回 as a more conversational alternative to 一度 in casual speech.
See it in action
Try it yourself — type or speak your answer in Japanese.
I eat breakfast every morning.
Built for output, powered by AI
AI That Gets Japanese
There are dozens of ways to say the same thing in Japanese. Our AI grades your intent, grammar, and vocabulary — not whether you memorized one answer.
Speak, Don’t Type
Say your answer out loud. Whisper transcribes it, AI grades it — the closest thing to a conversation partner available 24/7.
Shadow Native Audio
Listen to the sentence, record yourself repeating it, then compare side by side. Train your ear and your mouth together.
Dictation Mode
Hear a sentence at slow then natural speed and transcribe what you hear. Builds the listening-to-writing bridge most apps skip.
Spaced Repetition + Cram
SM-2 schedules reviews at the perfect time. Need to drill before a test? Cram mode lets you burn through all due sentences in one session.
JLPT N5 through N1
22,786 sentences across every proficiency level. Real situations — ordering ramen, making weekend plans, apologizing to your boss.
Grammar Journal
Every grammar pattern you encounter is logged automatically. Watch your journal fill up as proof of what you’ve actually practiced.
Ambient Review Playlist
Loop your sentences with rain, ocean waves, or temple bells in the background. Passive review for your commute or wind-down.
Skill Radar
Six-axis chart tracking grammar, vocabulary, register, coverage, independence, and recall. See exactly where you’re strong and where to focus next.
Learn With Friends
Refer friends to unlock +5 daily sentences each (up to +30). Visit each other’s pixel-art gardens and earn rare rewards together.
Free tools to level up your Japanese
No account needed. Just play.
Kana Bloom
Speed-type hiragana and katakana as they fall. Combos, waves, and leaderboards.
Play FreeKotoba Cut
Slash falling verbs by typing the correct conjugation. 10 forms, 3 verb types.
Play FreeGrammar Library
Browse 170+ JLPT grammar patterns with explanations and examples. N5 through N1.
Browse FreeVocab Vault
Explore 6,700+ words across JLPT N5–N1 with readings, example sentences, and audio.
Browse FreeGrow a garden with every sentence you master
Complete sentences to earn water drops. Water your plants and watch them grow. Master sentences to earn kagi and open treasure chests for rare items. 52 collectible items across 5 rarity tiers.
52
collectible items
5
rarity tiers
4
seasons
What learners are saying
“I’ve used Duolingo, Anki, WaniKani — you name it. JIVX is the first app that actually makes me produce Japanese instead of just recognizing it. My speaking confidence has completely changed after two months.”
“The AI grading is what sold me. I kept getting marked wrong on other apps for perfectly valid answers. Here I can express things naturally and get real feedback on my grammar and tone instead of a red X.”
“I studied Japanese in college ten years ago and lost most of it. Five minutes a day with JIVX and I’m forming sentences I forgot I knew. It feels like waking up a part of my brain that was just sleeping.”
Free. Actually free.
Free
No credit card. No trial. No catch.
- N5 level — 2,135 sentences
- 5 sentences per day
- AI grading
- Voice input
- Shadowing practice
- Passive review playlist
- Full garden system
- Invite friends for +5 daily sentences
Pro
For serious learners.
- Everything in Free
- N4 through N1 — 22,786 total sentences
- 50 sentences per day
- 7-day free trial
Questions
How does JIVX help me speak Japanese?
JIVX trains output: you read an English prompt and produce Japanese from memory using your keyboard or voice. This builds the same mental muscle you use in real conversation — generating language, not just recognizing it.
Why does JIVX use AI grading instead of answer matching?
Japanese has many valid ways to express the same idea. Traditional apps compare against one correct answer, which fails for a language this flexible. Our AI evaluates your intent, grammar accuracy, vocabulary choice, and tone — not whether you memorized a specific phrase.
What JLPT levels does JIVX cover?
N5 through N1. Each level covers everyday situations like ordering food, asking for directions, talking about work, and more. The free tier includes full N5 access. Paid unlocks N4 through N1.
Is JIVX really free?
Yes. The free tier gives you full access to N5 with AI grading, voice input, shadowing practice, and the garden system. It is not a trial. It is the complete app at the beginner level. No credit card required.
Can I practice speaking Japanese with JIVX?
Yes. Use voice input to speak your answer in Japanese. The AI transcribes your speech and grades it the same way it grades typed answers — evaluating grammar, vocabulary, and tone. You can also use shadowing to record yourself repeating native pronunciation.
What makes JIVX different from Duolingo or WaniKani?
Duolingo focuses on recognition — pick the right answer from a list. WaniKani teaches kanji reading. JIVX focuses on production: you generate Japanese from scratch, the way you would in a real conversation. No multiple choice. No word banks. Just you, forming sentences.
Your Japanese is ready to come out.
Start Practicing FreeFree forever on N5. No credit card required.