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Effective: May 29, 2026 · Last updated: September 14, 2026
For any questions, bug reports, or data deletion requests, please email us. We typically reply within 2–3 business days.
No. There is no sign-in or registration in the app, and we never ask for your name, email address, or any other personal information. Your progress is stored on your device and, if iCloud is enabled on the device, synced automatically to your own iCloud.
On your device and, if iCloud is enabled in your device settings, synced to your own iCloud (CloudKit private database). No one — including the developer — can access it, and you can continue learning on other devices using the same iCloud account. No in-app sign-in is involved.
One full study loop per day is free; some stages and content are premium. Premium is available as a monthly or yearly subscription, or a one-time lifetime purchase. All payments and refunds are handled by the Apple App Store.
Cancel in iOS Settings → Apple Account → Subscriptions. Deleting the app does not cancel a subscription. On a new device, tap "Restore Purchases" on the premium screen.
No. All notifications are local (scheduled on your device) and only work if you turn them on: a daily study reminder at a time you choose, a streak reminder, and a JLPT exam D-day countdown if you set an exam date. You can turn them off anytime in MY → Notifications.
Via audio files bundled with the app and on-device iOS speech synthesis (TTS). The app does not record your voice or send audio anywhere.
Go to MY → Reset data. Your learning data on the device and in iCloud is deleted immediately and cannot be recovered. Resetting your data does not cancel a subscription — cancel it separately in iOS Settings → Subscriptions. You can also request deletion by email; we process requests within 7 days.
Beyond this, the app collects no personally identifying information (name, email, phone number) and uses no third-party analytics SDKs. The only advertising SDK, Google AdMob, is used solely for rewarded ads a free user chooses to watch (see section 2).
| Service | Purpose |
|---|---|
| Apple CloudKit | Content delivery (public database, read-only) · learning data sync (private database) |
| Apple App Store (StoreKit) | Subscription and lifetime-purchase processing. Payment details (cards, etc.) are handled solely by Apple; the app never collects them |
| Google AdMob | Shows one rewarded ad only when a free user taps “Cheer” to refill energy. No ads play on launch and there are no interstitials. The first time you watch an ad, iOS shows the App Tracking Transparency prompt once. If you allow it, the advertising identifier (IDFA) is used to show ads matched to your interests; if not, ads are non-personalized (you can watch ads either way). You can change this any time in iOS Settings > Privacy & Security > Tracking. In the EEA and UK, Google’s ad consent screen is shown first, and the iOS tracking prompt follows only if you consent there. Device information needed to serve ads (model, OS, IP, etc.) is processed under Google’s ad policies |
Ads (Google AdMob) appear only for free users and only after tapping “Cheer for Mochinyan” (from September 2026). Premium users never see the button. Google’s handling of ad data follows Google’s advertising policies.
We do not sell or share stored information with third parties.
Learning data lives on your device and, when iCloud is enabled, in Apple CloudKit (private database) and iCloud key-value storage, governed by Apple's privacy policy. It is accessible only through your own iCloud account, and you can delete it at any time with the in-app reset.
Only local notifications (scheduled on-device) are used; no remote push (APNs). The daily reminder, streak reminder, and JLPT D-day countdown all work only if you enable them.
Delete instantly in the app via MY → Reset data (removes both on-device and iCloud-synced data). There is no account, so no separate account-deletion step exists. Uninstalling the app deletes local data, but iCloud data may remain — use the in-app reset for complete removal. You can also request deletion by email; we process requests within 7 days. Subscriptions must be cancelled separately in iOS Settings → Subscriptions.
This policy may be updated. When changes occur, we'll post a notice in the app and on this page.