Privacy policy
In short: Kanji Nova works without an account, and without one nothing about you leaves your phone. If you choose to sign in, we keep your email address and your study progress so it is safe and follows you to a new phone. There are no ads, no analytics and no tracking, and you can delete everything at any time.
Who we are
Kanji Nova (“we”, “us”) makes the Kanji Nova app. For anything about this policy or your data, write to support@kanjinova.com.
Using the app without an account
Everything the app needs — kanji, words, stroke order, example sentences, practice questions and artwork — is built into it, so it works with no connection. What you do in the app is stored only on your phone, in the app’s own storage:
- your chosen JLPT level and settings (appearance, new kanji per day, widget and lock screen options);
- your review history: which kanji you have studied, how you rated them, and when each is next due;
- your practice test scores, and which practice questions you have seen;
- kanji you have hidden from the widget, and the upcoming kanji the widget and lock screen will show.
None of this is sent to us or anyone else. The lock screen kanji is a notification created by your phone itself. Reading a kanji aloud uses your phone’s built-in text-to-speech.
If you sign in
An account is optional. If you create one, we process:
| What | Why |
|---|---|
| Your email address | To send you a one-time sign-in code, and to identify your account. There is no password. |
| When your account was created, and when you last signed in | To run the account and keep you signed in. |
| Your study progress: JLPT level and new kanji per day; review history and when each kanji is next due; practice test scores and which questions you have seen; kanji you have hidden from the widget | So your progress is backed up and the same on every phone you sign in on. It syncs automatically while you are signed in. |
Your appearance, lock screen and widget settings are not synced; they stay on each phone. Only you can read your account’s data: every row is tied to your account and protected so that no other user can see it.
We use your data only to provide the app. We do not sell it, share it for advertising, or use it to build a profile of you.
Services that process data for us
- Supabase hosts accounts and synced progress.
- Resend delivers the sign-in code emails; it receives your email address and the code.
- Cloudflare hosts this website and forwards email sent to our @kanjinova.com addresses. Like any web host, it handles your IP address when you visit.
Each processes data only on our instructions and under its own security commitments. These companies may process data in countries other than yours, including the United States.
The app is distributed by Google Play and the Apple App Store, which handle your download and any purchases under their own privacy policies.
What we do not do
- No analytics, crash reporting, advertising or advertising identifiers.
- No third-party trackers in the app or on this website, and the website sets no cookies.
- No access to your contacts, camera, microphone, photos or location.
Permissions
The app asks for permission to show notifications only if you turn on the lock screen kanji. On Android it may also ask to schedule exact alarms, so the kanji changes on time, and it notices when your phone restarts so the lock screen kanji comes back afterwards.
How long we keep it
Account data and synced progress are kept for as long as you have an account. Data on your phone stays until you delete it or uninstall the app. If you email us, we keep the conversation only as long as we need it to help you.
Deleting your data
- Delete your account in the app under You → Delete account. This permanently removes your account, your email address and all synced progress, straight away.
- Delete your progress under You → Data & privacy → Delete my data. This erases it from your phone and, if you are signed in, from your account, while keeping the account.
- Can’t open the app? See how to ask us to delete your account.
Your rights
You can ask us for a copy of your data, to correct it, or to delete it, and you can object to how we use it. Write to support@kanjinova.com from the email address on your account and we will reply within 30 days. If you are unhappy with how we handle your data, you can also complain to your local data protection authority.
Security
Everything sent between the app and our services is encrypted in transit. Sign-in uses one-time codes, so there is no password to leak.
Children
Kanji Nova is a study app for a general audience and is not directed at children under 13. We do not knowingly collect personal data from children under 13; if you believe a child has created an account, write to us and we will delete it.
Changes
If we change what we collect — for example when subscriptions are added — we will update this policy and its effective date before the change reaches the app, and tell you in the app when the change matters to you.