Last updated: December 29, 2025
Introduction
Welcome to Kitsu: Japanese Vocab & Kanji ("we," "our," or "us"). We are committed to protecting your privacy and ensuring the security of your personal information. This Privacy Policy explains how we collect, use, and safeguard your data when you use our mobile application.
Information We Collect
Account Information
Email address and name for account creation and authentication.
Profile information you choose to provide.
Subscription and payment information (processed securely through third-party payment providers).
Learning Data
Your progress in hiragana, katakana, kanji, vocabulary, and grammar lessons.
Practice session results and performance metrics.
Study streaks and achievement data.
Preferred learning settings and customizations.
Chat and AI Interaction Data
Conversations with our AI tutor "Kitsu" for personalized learning assistance.
Voice recordings when using speech-to-text features (processed and not stored permanently).
Technical Information
Device information (type, operating system, app version).
Usage analytics to improve app performance.
Crash reports and error logs for debugging purposes.
How We Use Your Information
Provide personalized Japanese learning experiences.
Track and sync your learning progress across devices.
Enable AI-powered tutoring and conversation practice.
Process subscription payments and manage your account.
Improve our app's features and user experience.
Provide customer support and respond to your inquiries.
Data Storage and Security
We use Firebase (Google Cloud) for secure data storage and user authentication. Your data is encrypted in transit and at rest. We implement industry-standard security measures to protect your personal information from unauthorized access, alteration, disclosure, or destruction.
Third-Party Services
Our app integrates with the following third-party services:
Firebase/Google Cloud: For authentication and data storage.
OpenAI: For AI-powered chat functionality.
RevenueCat: For subscription management and purchase verification.
Google Play Billing: For processing in-app purchases.
Your Rights and Choices
You have the right to access, update, or delete your personal information.
Account and Data Deletion You have full control over your data. You can delete your account and all associated personal data (including learning progress and profile information) at any time through the following methods:
In-App: Navigate to the "Customize Profile" section (where you change your profile name) and tap the "Delete Account" button.
Email Request: Contact us at support@kitsuapp.com to request data deletion. Upon request, we will remove your personal data within 30 days, except where retention is required by law.
Children's Privacy
Our app is designed for users 13 years and older. We do not knowingly collect personal information from children under 13.
Contact Us
If you have any questions about this Privacy Policy or our data practices, please contact us at: Email: support@kitsuapp.com