Japandizer: Learn Easy Japanese — Privacy Policy | سياسة الخصوصية

Privacy Policy for Japandizer (`com.codemahou.japandizer`)

Code Mahou built the Japandizer: Learn Easy Japanese app as a free educational application. This Privacy Policy informs users regarding our policies with the collection, use, and disclosure of information when using the App.

1. No Account Required & Local-First Learning Storage

• Japandizer does not require you to register an account or provide any personally identifiable information (such as your name, email address, phone number, or precise GPS location).
• All of your study progress—including XP points, user rank, daily study streaks, mastered Hiragana/Katakana/Kanji characters, saved favorites, handwriting practice, and quiz scores—is stored 100% locally on your device via Android SharedPreferences and an embedded offline SQLite database.

2. Permissions & Device Identifiers Used

• Internet & Network State (INTERNET, ACCESS_NETWORK_STATE): Used to load advertisements via Google AdMob and receive optional Firebase notifications. Core Japanese lessons, audio pronunciations, handwriting practice pads, and quizzes work offline.
• Advertising ID (com.google.android.gms.permission.AD_ID): Used by the Google Mobile Ads SDK (AdMob) to serve ads, enforce frequency capping, measure ad performance, and prevent fraud.
• Push Notifications (android.permission.POST_NOTIFICATIONS): Optional runtime permission on Android 13+ used by Firebase Cloud Messaging to deliver study reminders or app updates. You may grant or revoke this permission at any time in your device settings.

3. Third-Party Services (Google AdMob & Firebase)

The App integrates official Google SDKs that automatically collect certain non-personal device identifiers and diagnostic data:

• Google AdMob (Google Mobile Ads SDK): Collects your device's Advertising ID (AAID), coarse location (inferred from IP address), device model/OS version, and ad interaction events to serve Banner, Interstitial, Native, Rewarded (e.g., 50:50 Quiz Hints and 2x XP bonuses), and App Open advertisements. Ad content ratings are restricted to family/educational-friendly levels (PG).
• In-App Purchases (Google Play Billing — Japandizer Pro): Optional one-time lifetime upgrade (japandizer_pro_lifetime) to permanently remove all ads is processed securely and directly by Google Play Billing. We never collect or store any payment card information.
• Google Analytics for Firebase & Firebase Cloud Messaging (FCM): Collects Firebase Installation IDs, FCM registration tokens, app launch/screen events, and crash diagnostics to help us maintain stability and reliability.
• Third-party privacy policies:
  • Google Play Services & Google Privacy Policy
  • Google AdMob & AdSense Privacy Information
  • Google Analytics for Firebase Policy

4. Data Security, User Controls & Data Deletion

• Encryption in Transit: All data transmitted by the integrated Google AdMob and Firebase SDKs is encrypted in transit using industry-standard HTTPS / TLS.
• Advertising ID Controls: You can reset or delete your Advertising ID or opt out of personalized advertising at any time via your Android device settings (Settings > Google > Ads). Users in the EEA/UK are also presented with consent choices via Google's User Messaging Platform (UMP).
• Data Deletion: Because we do not operate external user accounts or store personal learning records on external servers, you can permanently delete all local app data at any time by clearing the app's storage in Android Settings or uninstalling the App.

5. Children's Privacy & Contact Us

• These Services do not knowingly collect personally identifiable information from children under the age of 13.
• If you have any questions or suggestions about our Privacy Policy, please contact Code Mahou at world.nice44@gmail.com or visit https://codemahou.github.io.