N3 Test — Privacy Policy

App: N3 Test (iOS / Android) · Developer: An An Trading · Contact: support@japanesetest.app · Effective date: 2026-11-12 · Version 1.1 (replaces the version of 2026-11-11)

Summary

• If you do not sign in, the app sends no personal data to our server; your results stay on your phone.
• You sign in with Apple or Google to receive your 3 free sections each day, to buy credits or the 30-day no-ads pass, and to keep your results and purchases when you change phones.
• Payment is handled by the App Store or Google Play. We never see your card or bank details.
• The app shows ads from Google AdMob (see “Advertising” below). There is no analytics or tracking software of our own in the app, and we do not sell your data.

Data stored on your phone

• On your phone the app stores your test results (test number, answers chosen, score, time taken), unfinished work, your interface language, a copy of your credits, unlocked and free sections and ad-free period, the ad settings last received from our server, and test sessions not yet reported to our server.
• If you sign in, a random sign-in token is kept in the app's private storage. On Android this token is excluded from system backups.
• If a purchase cannot be verified right away, the store receipt is kept on the phone until it is verified.
• Deleting the app removes all of this from your phone.

Data we store when you sign in

• When you sign in, we store the account ID that Apple or Google gives us and the email address they provide (with Apple's Hide My Email this is a relay address). We never receive your password.
• Test results you sync: test number, the sections taken, date and time, answers chosen, score and time taken.
• Sign-in sessions: we keep only a one-way hash of your sign-in token, and a session expires after 180 days without use.
• If you sign in with Apple, the refresh token Apple issues to the app is kept only to revoke the app's access with Apple when you delete your account.
• Free sections: which sections we gave you for free and when, so that free sections stay within 3 in any 24 hours and you do not get the same section twice.
• Test sessions: for each test session the app reports — the date and time, your account ID, whether the app runs on Android or iPhone, a two-letter country code worked out from your IP address when the session is reported (the IP address itself is not stored in this record), whether the sections were free, unlocked with credits or taken during a no-ads pass, the test and sections, the time taken, whether you submitted or left, how many ads were shown, and the app version. No name or email address is stored in this record. The same country code decides how many ads the app shows and whether you can watch an ad to unlock extra free sections or retake one.
• If you buy credits or the 30-day no-ads pass: the store transaction ID, product, purchase date, number of credits or the end of the ad-free period, the sections you unlocked and whether the store later reported a refund or cancellation. A refunded purchase is taken back from your account.
• We use this data only to sync your results between devices, keep your purchases, give out and count your free sections, protect the service from abuse, and — for test sessions — compile statistics by country (how many tests are taken, how many ads are shown) that we use to set the number of ads and to plan the service. We do not use it to target ads at you or to profile you.

Technical logs

• Our server writes technical logs (time, the request made, an internal account number, the app version and, for purchases and store notifications, the product and the store transaction ID) to keep the service running and secure. Log files are rotated by size.

Service providers and data recipients

• Apple (Sign in with Apple, App Store), Google (Google Sign-In, Google Play, Google AdMob — see “Advertising”) and DigitalOcean, which hosts our server in Singapore. These companies process data on our behalf, or under their own privacy policies for sign-in, payments and advertising.
• Apart from the Google Sign-In and Google Mobile Ads SDKs, the app contains no third-party SDK that collects data (no Google Analytics, Firebase or Meta SDK).

Advertising

• Ads are shown only at section boundaries — before the first section, between sections and before your results — never in the middle of a section or while audio is playing; the section timer is paused while an ad is shown. In free sections, the explanations of missed questions on the results screen open 10 at a time each time you watch a short rewarded ad; in some countries you can also watch a rewarded ad to unlock extra free sections or retake a free section.
• When the app loads or shows an ad, the Google Mobile Ads SDK sends Google LLC information such as your device's advertising identifier (on iPhone only if you allow tracking; on Android the Android advertising ID), IP address, device model and operating system, app version and how you interact with the ad. Google uses this information to show, limit and measure ads and to prevent fraud, under its own policy: policies.google.com/technologies/partner-sites.
• iPhone: before the first ad, the app asks whether you allow tracking. If you choose “Ask App Not to Track”, Google receives no advertising identifier and the ads are not personalised. You can change this at any time in Settings → Privacy & Security → Tracking. Android: you can reset or delete your advertising ID in your phone's settings.
• We do not send Google your email address, your account or your test results. Google does not give us personal data about you — AdMob reports to us only totals, such as how many ads were shown.
• Sections you unlocked with credits show no ads and all their explanations, and while your 30-day no-ads pass is active the app shows no ads at all and all explanations are shown.

Where your data is stored

• Account data is stored on our server in Singapore. By signing in, you understand that your data may be stored and processed outside your country of residence, including outside Japan.

How long we keep it

• Account data and synced results are kept until you delete your account. Server backup copies are replaced daily and only the latest 14 are kept, so deleted data leaves the backups within 14 days.

Your rights and account deletion

• You can delete your account at any time in the app (Account → Delete account) or by email. This removes your account, synced results and purchase records from our server at once, and revokes Sign in with Apple.
• You can also email us to ask for a copy of your data or to correct it. If you live in Japan, you may ask us to disclose, correct, stop using or delete your personal data under the Act on the Protection of Personal Information; we will respond without delay.

Security

• All connections between the app and our server use HTTPS. Sign-in tokens are stored only as one-way hashes, and the Apple refresh token is never sent back to the app.

Children

• N3 Test is not directed at children under 13, and we do not knowingly collect personal data from children. If you believe a child has signed in, contact us and we will delete the account.

This website

• This section applies only to the N3 pages of japanesetest.app in a web browser: they load no advertising or analytics tags and set no cookies.