Kana Challenge: Learn Hiragana
Kana Challenge Privacy Policy
This policy explains what information the Kana Challenge app (iOS and Android) collects, why, and the choices you have. My SenpAI LLC ("we", "us") publishes Kana Challenge.
- Kana Challenge has no accounts. We never ask for your name or email.
- Your progress, scores and settings are stored on your device.
- Speaking practice uses your device's speech recognition. We do not receive or store your voice.
- The free version shows ads through Google AdMob. We use Firebase to measure usage and crashes.
Information we collect
| Information | Why we use it | Who processes it |
|---|---|---|
| Your voice while you use Speaking Practice | Converting your speech to text so the app can score your pronunciation. The audio is handled by the speech recognition service built into your device, which may process it on the device or on Apple or Google servers under their own privacy policies. We do not receive or store this audio. | Apple (iOS) or Google (Android) |
| Purchase confirmation (product, date, transaction ID) | Unlocking what you bought and restoring purchases | Apple, Google |
| Usage events (screens viewed, features used, lesson or puzzle results, purchase and ad events), app version, device model, OS version, language, approximate country/region derived from your IP address, and an app-instance identifier | Understanding which features are used and fixing problems | Google Firebase Analytics |
| Crash reports: stack traces, device state at the time of the crash, and an installation identifier | Finding and fixing crashes | Google Firebase Crashlytics |
| Advertising identifier (IDFA on iOS only if you allow tracking; Android Advertising ID), IP address, device information, and ad interactions | Showing ads, limiting how often you see the same ad, measuring ad performance, and preventing fraud | Google AdMob |
Information that stays on your device
- Quiz results, lesson progress, streaks and settings
- Your reminder time. Reminders are scheduled on your device, and we do not send push notifications from a server.
Deleting the app deletes this information.
Device permissions
- Microphone and speech recognition: used only while you are in Speaking Practice.
- Notifications: for optional daily study reminders.
- Tracking (iOS): see Advertising.
The app does not access your photo library, contacts or location.
Advertising
The free version of Kana Challenge shows ads through Google AdMob. Google and its advertising partners may use your device's advertising identifier and similar information to show ads, including ads based on your interests, and to measure ad performance. See How Google uses information from apps that use its services.
- iPhone and iPad: the app asks for permission before it uses your advertising identifier (App Tracking Transparency). If you tap "Ask App Not to Track", ads are still shown but are not personalized with that identifier. You can change this anytime in Settings → Privacy & Security → Tracking.
- Android: you can reset or delete your advertising ID in Settings → Google → Ads (the exact path varies by device).
- European Economic Area, UK and Switzerland: the app shows Google's consent form before personalized ads are used. You can change your choice anytime in the app’s Settings.
Purchases
In-app purchases are processed by Apple (App Store) or Google (Google Play). We never receive your payment details.
Service providers we use
These companies process data on our behalf, or as independent providers, to make Kana Challenge work. Each has its own privacy policy:
- Google Firebase Analytics and Crashlytics (Firebase privacy and security, Google Privacy Policy)
- Google AdMob: advertising and the consent form (How Google uses information from apps that use its services)
- Apple and Google: speech recognition and in-app purchases (Apple Privacy Policy, Google Privacy Policy)
We do not sell your personal information for money. Personalized advertising through AdMob may count as "sharing" or "targeted advertising" under some US state privacy laws. You can opt out by turning off ad tracking as described in the Advertising section.
We may also disclose information if the law requires it, to protect the rights and safety of our users or others, or as part of a merger or sale of the business (in which case this policy continues to apply to your information).
How long we keep information
- Analytics and crash data: kept for the retention period set in Google Analytics and Firebase, then deleted automatically.
- Purchase records: kept by Apple and Google under their own policies.
Your choices and rights
Kana Challenge has no account, so your progress exists only on your device. Deleting the app removes it. To ask us to delete analytics data linked to your device, email us.
Depending on where you live, you may have the right to access, correct, delete or get a copy of your personal information, to object to or restrict certain processing, to withdraw consent, and to opt out of targeted advertising. This includes residents of the European Economic Area and the UK (GDPR), California and other US states with privacy laws, and Japan (APPI). To make a request, email [email protected]. We will respond within the time the law requires and will not treat you differently for using these rights. If you are in the EEA or UK, you can also complain to your local data protection authority.
Where the GDPR applies, we process data to provide the app you asked for (contract), to keep it working, secure and improving (legitimate interests), and for personalized ads and similar uses only with your consent.
Children
Kana Challenge is a general-audience learning app and is not directed at children under 13 (or the minimum age required in your country). We do not knowingly collect personal information from children under that age. If you believe a child has provided us with personal information, contact us and we will delete it.
Where information is processed
My SenpAI LLC is registered in the United States. Our servers and service providers are located in the United States, Japan and other countries, so your information may be processed outside the country where you live. When we transfer personal information from the EEA or UK, we rely on our providers' legal transfer mechanisms, such as the European Commission's Standard Contractual Clauses.
Security
We use reasonable technical and organizational measures to protect information, including encrypted connections to our account and analytics providers. No system is perfectly secure, so we cannot guarantee absolute security.
Changes to this policy
If we change this policy, we will post the new version on this page and update the effective date. If a change is significant, we will also tell you in the app or on the app's store listing.
Contact us
My SenpAI LLC
Email: [email protected]
This policy covers Kana Challenge only. Our website and other apps are covered by their own policies, linked below.