About this app
Study Japanese vocabulary for your own goal—exam preparation, everyday conversation, business conversation, and more. Words you answer incorrectly are saved automatically, so you can review your weak points all at once later. [AI Quiz] Based on the occupation, role, and goals you set, AI automatically generates fill-in-the-blank Japanese questions. AI features are available only when a Groq API key is set. With Groq's free tier, you can try the AI features without registering a credit card. *Groq's terms and usage limits are subject to change. [Main Features] - Learn Japanese words by level - Learn everyday conversation words - Automatic recording of incorrect words - Review words you previously got wrong - Create your own list - Word search - File import / export - Check words with example sentences and notes - Report a word whose translation seems off, on the spot - Generate example sentences using quiz words (when an API key is set) - AI quiz (free plan: up to 10 questions per day) - Stroke-order tracing practice for hiragana and katakana - A forum to exchange opinions about learning Japanese - A mini-game for a quick break [With Premium] - Remove ads - No limit on AI quizzes (subject to Groq's limits) Make it part of your daily Japanese study, exam preparation, and building conversational vocabulary. *"Nihongo Kentei" is a registered trademark of the Japanese Language Testing Council (NPO). *This app is operated by an independent developer and has no affiliation with the Japanese Language Testing Council.
Latest release
What’s New
- Added a community forum where you can ask questions and exchange tips about learning Japanese with other users. - Added stroke-order tracing practice for hiragana and katakana. - Added Khmer and Vietnamese language support. - Redesigned the display-language selector as a compact wheel. - Added update notifications. - Various improvements and minor bug fixes.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 4, 2026 · 1:19 PM Free
Screenshots
