Privacy policy
The Japanese text is authoritative. Other languages are provided for understanding; where they differ, the Japanese governs.
1. What we collect
The email address you use to sign in.
Your study record (scores, questions you got wrong, review schedule, exam history). This is stored on our servers only if you use sync. Without sync, your study record stays in your browser.
Access logs (IP address, browser type, timestamp), used to prevent abuse and investigate faults.
When ads are served, Google and other third-party vendors collect cookies, advertising identifiers, IP addresses and browsing history. None of that is stored on our servers.
2. Why we use it
To provide the service, verify who you are, prevent abuse, and improve the app.
This app is free, and advertising revenue is what pays for it. Your information is therefore also used to serve ads and measure how often they are shown.
3. Sharing and processors
We do not hand your information to third parties except where required by law.
We use external processors to run the service: advertising (Google AdSense), sign-in (Supabase, and Google if you use Sign in with Google), email delivery, and hosting. They receive only what is needed and are required to handle it properly.
4. Cookies and advertising
This app shows advertising through Google AdSense.
Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this app or other websites.
You can turn off personalised advertising in Google Ads Settings (https://www.google.com/settings/ads). To opt out of third-party vendor cookies more broadly, see https://www.aboutads.info.
Separately, we use one cookie to keep you signed in. It has nothing to do with advertising, and disabling it means you cannot stay logged in.
We never pass your study record itself to advertising vendors.
5. Retention and deletion
We keep your data while your account exists. You can delete the account at any time from the account screen, which erases your email address and study record.
Deletion of anything held by advertising vendors is governed by those vendors, not by us.
6. Access, correction, and suspension
On request from you, we will disclose, correct, or stop using the information we hold. Contact us at the address below.
7. Minors
If you are a minor, please obtain your guardian consent before creating an account.
8. Changes
If we change this policy, the updated text will be posted on this page.
9. Contact
menkyodojo@gmail.com