Support
We read every email. Typical response within 2 business days.
Get in touch
For bug reports, learning questions, account issues, or anything else, email us. Please include your device model, OS version, app version, and a short description of what happened.
Frequently asked questions
What is Tanuki?
Tanuki teaches English speakers Japanese, from hiragana and katakana through kanji, vocabulary, grammar and graded reading, across the full JLPT ladder from N5 to N1. It uses active recall, spaced repetition, stroke-order tracing, furigana, and pitch-accent data, so what you learn actually sticks.
The whole app works offline, with no streaks that punish you for missing a day.
Do I need an account?
No. You can install Tanuki and start learning immediately, with no sign-up and no personal information. The app uses a private, anonymous identifier behind the scenes to back up your progress and let you send content reports. It never asks for your name or email.
How does the review schedule work?
Tanuki uses a spaced-repetition scheduler (FSRS). Each kana, kanji, word and grammar point you learn is scheduled to come back for review just before you would forget it. The more reliably you recall something, the longer until it returns. Missing a day simply reschedules your reviews; nothing is lost and you are never penalized.
Why does it ask me to type or trace instead of just tapping?
Producing the answer yourself, by tracing the stroke order or typing on the in-app kana keyboard, is what builds durable memory. Multiple-choice is used only the first time you meet a new item; after that, Tanuki asks you to recall it actively. That is the core of why it works better than tap-only apps.
Does Tanuki use romaji?
Only briefly, as a training wheel inside the kana module while you are still learning the shapes. Once you know hiragana and katakana, every screen shows kana and kanji with furigana, never a romanized crutch.
Something in a lesson looks wrong. How do I report it?
Tap "Something looks wrong?" on the lesson or review screen and choose the type of problem. The report includes only the item, the problem type, an optional short note, the app version, and your anonymous identifier; no personal information. We use these reports to correct content quickly.
How do I turn practice reminders on or off?
Open Settings and use the daily reminder option. Reminders are off until you enable them, and you choose the time. They are scheduled locally on your device; we do not send push notifications from a server.
How do I delete my account?
From the app: open Settings, scroll to the bottom, and tap Delete account, then confirm. This clears all learning data stored on your device, removes your content reports, and deletes your anonymous account. The action cannot be undone.
Alternatively, email support@iocodo.com with the subject "Tanuki Account Deletion" and we will process it within 30 days.
Does Tanuki track me?
Tanuki has no advertising SDK and does not track your activity across other apps or websites. It uses Firebase Analytics for anonymous usage statistics and Firebase Crashlytics for crash diagnostics, neither of which includes your name, email, or any other personally identifying information. See the Privacy Policy for full detail.
How do I report a bug or crash?
Email support@iocodo.com with:
- Device model and OS version
- App version (visible in Settings)
- What you were doing when it happened
- Whether it is reproducible
How do refunds work?
Tanuki is a free download. If you purchased Tanuki Pro, refunds are handled by the store you purchased through: