About
I built Japanese Conjugation Practice because I wanted a fast, focused way to drill verb and adjective forms — without the clutter of a full study app. Get a word, conjugate it, move on.
What it covers
The app currently includes words from all five JLPT levels (N5–N1), covering three word categories:
- Verbs (ichidan, godan, and irregular)
- い-adjectives
- な-adjectives
Each word can be practiced across a range of conjugation forms including te-form, negative, past, polite, potential, passive, causative, conditional, volitional, and more.
JLPT does not publish official vocabulary lists. The levels used here are based on widely used community word lists and may not exactly match current exam content.
How to use it
Open the practice page and start answering. Use the settings (gear icon in the header, or the summary line above the question) to customize your session:
- Script — show words in kanji with furigana, or hiragana only
- Answer mode — multiple choice or free text input. In multiple choice the options stay hidden until you tap “Show choices”, so you try to recall the answer first; you can switch that off
- JLPT level — filter words by level
- Word types — focus on verbs, い-adjectives, な-adjectives, or any combination
- Conjugation forms — choose which forms to practice
- Voice — select a Japanese voice for audio playback, or enable auto-speak to hear the answer after each question
Your settings are saved in your browser so they persist between sessions.
Daily goal and streaks
You can set a daily answer goal (default: 10 answers). The ring at the top tracks how far along you are. Practice every day to build a streak. Miss a day and the streak resets — though a streak freeze automatically saves you once every seven days.
Tap the ring to open your stats: your streak, accuracy by form — weakest first — and all-time totals. A question you get wrong comes back a few questions later, with the rule behind the answer.
Works offline
The app is a Progressive Web App. After your first visit, the app, your settings and your stats all work without a connection. You can install it to your home screen on mobile for a native-app feel.
Each JLPT level's word list is downloaded and kept the first time you practice it. As long as you've practiced your levels once while connected, practice will work offline.
Your data
All practice data — settings and stats — is stored locally in your browser by default. If you clear your browser data, it's gone.
You can optionally sign in with Google or Apple to back up your data to the cloud. Your data is preserved even if you clear your browser, switch browsers, or use a different device. Sync is entirely opt-in — without it, the app works fully offline with all data stored locally.
See the privacy policy for details on how synced data is handled.
Free and ad-free
The app is completely free and always will be, with no ads. Accounts are optional and only needed for cloud sync. (The practice page does link to a tutoring service I am affiliated with.) If you find it useful and want to support it, you can make a donation. For feedback or bug reports, get in touch.
Building vocabulary too? Try the sister app, Japanese Vocab.