Privacy Policy
Last updated: January 2026
Introduction
A Simple Way to Learn Japanese ("we", "our", or "the App") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our mobile application.
Information We Collect
Information You Provide
- Account Information: If you choose to sign in with Google for cloud sync, we receive your Google account email, display name, and profile photo.
- Learning Progress: Your quiz scores, mastery levels, streak data, and learning statistics.
- Preferences: Your app settings such as language preference, sound effects, and haptic feedback preferences.
Automatically Collected Information
- Device Information: Device type, operating system version, and app version for troubleshooting and compatibility.
- Usage Data: Anonymous analytics about which features are used to help us improve the app.
- Crash Reports: Technical information about app crashes to help us fix bugs.
Information We Do NOT Collect
- We do not collect your location data
- We do not access your contacts, photos, or other personal files
- We do not track your browsing activity outside the app
- We do not sell any personal information to third parties
How We Use Your Information
We use the collected information for the following purposes:
- Cloud Sync: To save and restore your learning progress across devices when you sign in with Google.
- Progress Tracking: To track your learning journey and provide personalized review recommendations using spaced repetition.
- App Improvement: To understand usage patterns and improve the learning experience.
- Purchase Verification: To verify in-app purchases and restore purchased content.
- Achievements: To track your learning milestones and award achievements.
Data Storage and Security
Local Storage
Your learning progress is stored locally on your device by default. This data remains entirely on your device unless you choose to enable cloud sync by signing in with Google.
Cloud Storage
If you sign in with Google, your progress is securely stored in Firebase Cloud Firestore. This enables:
- Syncing progress across multiple devices
- Recovering progress if you lose or replace your device
- Backing up your learning data securely
Cloud data is encrypted in transit and at rest using industry-standard security measures.
Data Retention
We retain your data for as long as your account is active. You can delete your account and all associated data at any time through the app settings or our account deletion page.
Third-Party Services
Our app uses the following third-party services:
Google Sign-In
Used for optional account authentication and cloud sync. Subject to Google's Privacy Policy.
Firebase (Google)
Used for authentication and cloud data storage. Subject to Firebase Privacy Policy.
RevenueCat
Used to manage in-app purchases and credit purchases. Subject to RevenueCat's Privacy Policy.
App Store / Google Play
In-app purchases are processed through Apple App Store or Google Play Store, subject to their respective privacy policies.
Advertising (Optional)
If you choose to watch reward videos to earn credits, ads are served by Google AdMob. You can skip ads entirely by purchasing credits directly. AdMob may collect data according to Google's Privacy Policy.
Children's Privacy
Our app is suitable for users of all ages. We do not knowingly collect personal information from children under 13 without parental consent. The app can be used without creating an account, in which case no personal information is collected beyond anonymous usage analytics.
Your Rights
You have the right to:
- Access: View your stored data through the app settings.
- Delete: Delete your account and all associated data at any time via our deletion page or through the app settings.
- Opt-out: Use the app without signing in, keeping all data local to your device.
- Data Portability: Your learning progress can be viewed in the app.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any significant changes by posting the new policy in the app and updating the "Last updated" date above.
Contact Us
If you have questions about this Privacy Policy or wish to exercise your data rights, please contact us at: