Welcome to Tomo ("we," "our," or "us"). We are committed to protecting your privacy and ensuring you understand how we collect, use, and safeguard your information when you use our Japanese language learning application.
1. Information We Collect
1.1 Account Information
When you create an account with Tomo, we collect:
- Your name
- Your email address
- A unique user identifier
Account authentication is handled through Firebase Authentication, a service provided by Google. See Firebase Privacy Policy.
1.2 Conversation Data
To provide our language learning service, we collect:
- Text messages you send during conversations with Tomo
- Voice recordings when you use the speech-to-text feature (processed in real-time and not permanently stored as audio)
- Vocabulary words you encounter and use
- Grammar patterns identified in your conversations
- Words you mark as unknown for flashcard review
1.3 Usage Data
We automatically collect certain information about how you use the app:
- Conversation history and timestamps
- Words spoken by you and by Tomo
- Your learning progress and statistics
2. How We Use Your Information
We use the information we collect to:
- Provide personalized learning: Track your vocabulary to keep you in your "growth zone" with comprehensible input
- Generate AI responses: Send your messages to our AI service (OpenAI) to generate contextually appropriate Japanese conversation responses
- Text-to-speech: Convert Tomo's responses to natural-sounding Japanese audio
- Speech-to-text: Transcribe your spoken Japanese into text for the conversation
- Track progress: Show you statistics about words you've learned and used
- Flashcard review: Help you review vocabulary you've encountered
- Improve our service: Understand how users learn to make Tomo better
- Respond to support requests: Address your questions, feedback, and bug reports
3. Third-Party Services
We use the following third-party services to provide Tomo:
- Firebase Authentication (Google): Handles user account creation and authentication. Stores your name, email, and login credentials securely. See Firebase Privacy Policy.
- OpenAI: Powers our AI conversation partner. Your conversation text is sent to OpenAI's API to generate responses. See OpenAI's Privacy Policy.
- Google Cloud Text-to-Speech: Converts text responses to natural Japanese audio. See Google Cloud Privacy Notice.
- Supabase: Stores your conversation history and learning data securely. See Supabase Privacy Policy.
4. Data Storage and Security
Your data is stored securely using Supabase, a trusted cloud database provider. We implement appropriate technical and organizational measures to protect your personal information against unauthorized access, alteration, disclosure, or destruction.
Voice recordings are processed in real-time for transcription and are not permanently stored as audio files.
5. Data Retention
We retain your conversation history and learning data for as long as you use Tomo, as this data is essential for tracking your vocabulary and providing personalized learning. If you wish to delete your data, please contact us at the email below.
6. Your Rights
You have the right to:
- Access the personal data we hold about you
- Request correction of inaccurate data
- Request deletion of your data
- Object to processing of your data
- Request data portability
To exercise any of these rights, please contact us using the information below.
7. Children's Privacy
Tomo is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us.
8. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date.
9. Contact Us
If you have any questions about this Privacy Policy or our data practices, please contact us: