Privacy Policy
Last updated: February 20, 2026
1. Data We Collect
Tviy AI Vocabulary ("we", "our", or "us") collects the following information:
- Account Information: Email address (via Apple Sign-In or anonymous authentication)
- User Content: Saved words, translations, learning progress, search history
- Usage Data: App interactions, feature usage statistics
- Device Information: iOS version, device model (for crash reporting)
2. How We Use Your Data
- Provide translation services (via DeepL API)
- Store your personal dictionary (Firebase Firestore)
- Enable text-to-speech functionality (Firebase/Google Cloud TTS)
- Sync data across your devices
- Improve app performance and user experience
3. Third-Party Services
We use the following third-party services:
- Firebase (Google) — Authentication, Database, Storage, Hosting
- DeepL API — Translation services
- Free Dictionary API — Dictionary definitions
- Apple Sign-In — User authentication
These services may collect data according to their own privacy policies.
4. Data Storage & Security
- Your data is stored securely in Google Cloud (Firebase)
- Anonymous users: data stored locally with optional cloud sync
- Authenticated users: data encrypted in transit and at rest
- You can request data deletion by contacting support
5. Your Rights
You have the right to:
- Access your personal data
- Delete your account and all associated data
- Export your saved words
- Opt-out of analytics (where applicable)
6. Children's Privacy
Tviy AI Vocabulary is not intended for children under 13. We do not knowingly collect data from children under 13.
7. Changes to This Policy
We may update this Privacy Policy. Changes will be posted here with an updated date.
8. Contact Us
For questions about this Privacy Policy or your data:
© 2026 Tviy AI Vocabulary. All rights reserved.